Search Results: Semiperfect ring
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Semiperfect number
Kamis, 2025-09-04 16:00:23theory, a semiperfect number or pseudoperfect number is a natural number n equal to the sum of all or some of its proper divisors. A semiperfect number equal...
Click to read more »Semiperfect magic cube
Rabu, 2022-11-23 23:45:51In mathematics, a semiperfect magic cube is a magic cube that is not a perfect magic cube, i.e., a magic cube for which the cross section diagonals do...
Click to read more »Perfect number
Minggu, 2026-08-16 22:39:43Granville numbers. A semiperfect number is a natural number that is equal to the sum of all or some of its proper divisors. A semiperfect number that is equal...
Click to read more »80 (number)
Senin, 2026-08-24 09:44:381 + 2 + 2 + 4 + 2 + 6 + 4 + 6 + 4 + 10 + 4 + 12 + 6 + 8 + 8 = 80. A semiperfect number, since adding up some subsets of its divisors (e.g., 1, 4, 5,...
Click to read more »Weird number
Rabu, 2026-07-22 22:31:28theory, a weird number is a natural number that is abundant but not semiperfect. In other words, the sum of the proper divisors (divisors including 1...
Click to read more »18 (number)
Jumat, 2026-08-21 07:40:12(eighteen) is the natural number following 17 and preceding 19. 18 is a semiperfect number and an abundant number. In the classification of finite simple...
Click to read more »100
Sabtu, 2026-07-25 13:33:27100 can be expressed as a sum of some of its divisors, making it a semiperfect number. The geometric mean of its nine divisors is 10. 100 is the sum...
Click to read more »Magic cube
Senin, 2026-05-18 01:33:19the cube is called a perfect magic cube; otherwise, it is called a semiperfect magic cube. The number n is called the order of the magic cube. If the...
Click to read more »66 (number)
Senin, 2026-06-29 16:02:02natural number following 65 and preceding 67. 66 is a sphenic number, a semiperfect number, and a Erdős–Woods number. It is also the 11th triangular number...
Click to read more »300 (number)
Jumat, 2026-08-21 21:21:22× 19. It is a primitive semiperfect number because it is a semiperfect number that is not divisible by any other semiperfect number. It is an untouchable...
Click to read more »56 (number)
Jumat, 2026-07-31 03:50:10and 28, whose sum is 64, so 56 is an abundant number. It is also a semiperfect number, since 56 = 28 + 14 + 8 + 4 + 2 {\displaystyle 56=28+14+8+4+2}...
Click to read more »Perfect ring
Kamis, 2026-06-25 13:38:26side but not the other. Perfect rings were introduced in Bass's book. A semiperfect ring is a ring over which every finitely generated left module has a...
Click to read more »78 (number)
Minggu, 2026-06-21 03:13:2490,144,259,45,33,15,9,4,3,1,0) to the Prime in the 3-aliquot tree. a semiperfect number, as a multiple of a perfect number. the 12th triangular number...
Click to read more »Multimagic cube
Selasa, 2025-12-16 01:12:23semiperfect cube of order 64 and a perfect cube of order 256. It also reports that he discovered the only two known tetramagic cubes, a semiperfect cube...
Click to read more »70 (number)
Senin, 2026-07-20 06:08:00smallest weird number, which is a natural number that is abundant but not semiperfect. 70 is also part of the only nontrivial solution pair to the cannonball...
Click to read more »12 (number)
Jumat, 2026-08-14 14:15:10greater than 12. It is also the 3rd colossally abundant number. 12 is a semiperfect number because some of its proper divisors; 1, 2, 3, and 6; sum to 12...
Click to read more »102 (number)
Jumat, 2026-06-26 07:37:06number following 101 and preceding 103. 102 is an abundant number and a semiperfect number. It is a sphenic number. The sum of Euler's totient function φ(x)...
Click to read more »88 (number)
Selasa, 2026-08-04 04:19:04following 87 and preceding 89. 88 is: a refactorable number. a primitive semiperfect number. an untouchable number. a hexadecagonal number. an Erdős–Woods...
Click to read more »54 (number)
Jumat, 2026-08-14 17:44:32equal to some of its proper divisors summed together, so it is also a semiperfect number. These proper divisors can be summed in various ways to express...
Click to read more »Weird
Rabu, 2026-02-04 00:55:24test subjects Weird number, a natural number that is abundant but not semiperfect Weird route, another name for Deltarune's alternate route Weirdo (disambiguation)...
Click to read more »90 (number)
Selasa, 2026-05-26 03:05:25to the sum of a subset of its divisors, it is also the twenty-first semiperfect number. An angle measuring 90 degrees is called a right angle. In normal...
Click to read more »Magic hypercube
Rabu, 2025-08-27 21:18:00hypercube is called a perfect magic hypercube; otherwise, it is called a semiperfect magic hypercube. The number n is called the order of the magic hypercube...
Click to read more »96 (number)
Kamis, 2026-08-06 08:24:32octagonal number, a refactorable number, and an untouchable number. It is a semiperfect number since it is a multiple of a perfect number, namely 6. It is the...
Click to read more »Abundant number
Minggu, 2026-08-16 04:55:55is called a highly abundant number. An abundant number which is not a semiperfect number is called a weird number. An abundant number with abundance 1...
Click to read more »36 (number)
Minggu, 2026-07-12 08:13:51divisors (e.g., 6, 12, and 18) gives 36; hence, it is also the eighth semiperfect number. This number is the sum of the cubes of the first three positive...
Click to read more »700 (number)
Kamis, 2026-07-23 13:04:30743 connected cubic graphs with 16 vertices and girth four. 744 is a semiperfect number and an abundant number. The j-invariant, an important function...
Click to read more »Primitive abundant number
Minggu, 2026-06-21 00:55:15perfect number. Every primitive abundant number is either a primitive semiperfect number or a weird number. There are an infinite number of primitive abundant...
Click to read more »Diamond
Minggu, 2026-08-16 08:49:51South Wales, Australia. These diamonds are generally small, perfect to semiperfect octahedra, and are used to polish other diamonds. Their hardness is associated...
Click to read more »List of recreational number theory topics
Kamis, 2026-05-21 18:13:54perfect number Multiply perfect number Hyperperfect number Semiperfect number Primitive semiperfect number Unitary perfect number Weird number Untouchable...
Click to read more »Table of divisors
Senin, 2025-11-17 02:22:26deficient numbers a weird number is a number that is abundant but not semiperfect; that is, no subset of the proper divisors of n sum to n List of prime...
Click to read more »84 (number)
Rabu, 2026-08-05 11:53:01(eighty-four) is the natural number following 83 and preceding 85. 84 is a semiperfect number, being a multiple of a perfect number. It is the number of four-digit...
Click to read more »Fibonacci sequence
Jumat, 2026-08-21 12:18:18perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Bell number
Rabu, 2026-06-03 15:27:38perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Kaprekar number
Jumat, 2026-08-07 23:53:31perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Artinian ring
Selasa, 2026-05-12 09:15:13M_{k}(\operatorname {End} _{A}(I))} . Artin algebra Artinian ideal Serial module Semiperfect ring Gorenstein ring Noetherian ring Brešar 2014, p. 73 Clark, Theorem...
Click to read more »Natural number
Selasa, 2026-08-11 21:09:02perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »176 (number)
Sabtu, 2026-06-20 21:46:44number and an abundant number. It is an odious number, a self number, a semiperfect number, and a practical number. 176 is a cake number, a happy number...
Click to read more »Composite number
Sabtu, 2026-08-15 15:48:51perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Hemiperfect number
Jumat, 2024-12-13 05:45:3117/2 is ≈ 2.717290×10190. There are no known numbers of abundancy 19/2. Semiperfect number Perfect number Multiply perfect number "Number Theory". Numericana...
Click to read more »Parasitic number
Minggu, 2025-10-05 16:29:19perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Repunit
Jumat, 2026-07-10 05:18:45perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Fundamental theorem of arithmetic
Minggu, 2026-08-09 21:56:27Multiply perfect Hemiperfect Hyperperfect Superperfect Unitary perfect Semiperfect Practical Descartes Erdős–Nicolas With many divisors Abundant Primitive...
Click to read more »Superior highly composite number
Rabu, 2026-04-22 22:24:00Multiply perfect Hemiperfect Hyperperfect Superperfect Unitary perfect Semiperfect Practical Descartes Erdős–Nicolas With many divisors Abundant Primitive...
Click to read more »Kaprekar's routine
Jumat, 2026-08-14 15:10:08perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Divisor
Jumat, 2026-07-10 02:50:07Multiply perfect Hemiperfect Hyperperfect Superperfect Unitary perfect Semiperfect Practical Descartes Erdős–Nicolas With many divisors Abundant Primitive...
Click to read more »Fourth power
Jumat, 2025-09-05 01:53:41perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Tetrahedral number
Senin, 2026-08-10 17:04:42perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Star number
Minggu, 2026-03-15 21:15:17perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Catalan number
Jumat, 2026-08-21 19:54:46perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Sphenic number
Jumat, 2026-07-10 02:51:00Multiply perfect Hemiperfect Hyperperfect Superperfect Unitary perfect Semiperfect Practical Descartes Erdős–Nicolas With many divisors Abundant Primitive...
Click to read more »Semiprime
Jumat, 2026-07-10 02:50:53Multiply perfect Hemiperfect Hyperperfect Superperfect Unitary perfect Semiperfect Practical Descartes Erdős–Nicolas With many divisors Abundant Primitive...
Click to read more »Wieferich prime
Jumat, 2026-08-21 17:09:34perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Power of two
Jumat, 2026-08-21 13:32:29perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Power of 10
Minggu, 2026-05-03 08:30:44perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Principal indecomposable module
Selasa, 2020-04-07 22:49:24projective, and indecomposable modules. If the ring R is Artinian or even semiperfect, then R is a direct sum of principal indecomposable modules, and there...
Click to read more »Exponentiation
Minggu, 2026-07-19 10:12:08perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Arithmetic function
Rabu, 2026-07-08 04:51:31perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Integer sequence
Minggu, 2026-06-14 07:00:41Recamán's sequence Regular paperfolding sequence Rudin–Shapiro sequence Semiperfect numbers Semiprime numbers Superperfect numbers Triangular numbers Thue–Morse...
Click to read more »Prime number
Rabu, 2026-08-12 19:44:57Multiply perfect Hemiperfect Hyperperfect Superperfect Unitary perfect Semiperfect Practical Descartes Erdős–Nicolas With many divisors Abundant Primitive...
Click to read more »Perfectly orderable graph
Sabtu, 2026-01-31 11:37:18elimination ordering of a chordal graph and a perfect ordering is a semiperfect elimination ordering: in an elimination ordering, there is no three-vertex...
Click to read more »Polydivisible number
Sabtu, 2026-06-20 05:33:05perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Highly composite number
Minggu, 2026-08-02 22:54:14Multiply perfect Hemiperfect Hyperperfect Superperfect Unitary perfect Semiperfect Practical Descartes Erdős–Nicolas With many divisors Abundant Primitive...
Click to read more »Unitary divisor
Jumat, 2026-05-15 19:08:37Multiply perfect Hemiperfect Hyperperfect Superperfect Unitary perfect Semiperfect Practical Descartes Erdős–Nicolas With many divisors Abundant Primitive...
Click to read more »Congruent number
Senin, 2026-08-03 14:33:43perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »104 (number)
Kamis, 2025-10-09 20:37:33103 and preceding 105. 104 is a refactorable number and a primitive semiperfect number. The smallest known 4-regular matchstick graph has 104 edges and...
Click to read more »Centered square number
Sabtu, 2026-02-21 17:49:32perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Octahedral number
Selasa, 2025-06-17 04:47:58perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Lucas number
Rabu, 2026-07-01 21:26:00perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »108 (number)
Senin, 2026-07-27 02:55:53following 107 and preceding 109. 108 is an abundant number, a self number, a semiperfect number and a tetranacci number. It is a Harshad number in bases 2, 3...
Click to read more »1728 (number)
Sabtu, 2026-08-08 12:54:24576 or 242, which divides 1728 thrice over. 1728 is an abundant and semiperfect number, as it is smaller than the sum of its proper divisors yet equal...
Click to read more »Idempotent (ring theory)
Senin, 2026-06-22 13:48:59e2R ⊕ ... ⊕ enR with each ei a local idempotent if and only if R is a semiperfect ring. A ring is called an SBI ring or Lift/rad ring if all idempotents...
Click to read more »900 (number)
Rabu, 2026-08-19 22:42:27smallest odd primitive abundant number, and the smallest odd primitive semiperfect number. 945 is the double factorial of 9: 945 = 9!!. 946 = 2 × 11 × 43...
Click to read more »Pentagonal number
Rabu, 2026-05-27 22:11:02perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Practical number
Selasa, 2025-12-30 02:12:17Multiply perfect Hemiperfect Hyperperfect Superperfect Unitary perfect Semiperfect Practical Descartes Erdős–Nicolas With many divisors Abundant Primitive...
Click to read more »Schröder–Hipparchus number
Rabu, 2026-05-13 05:37:34perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Unitary perfect number
Kamis, 2026-06-04 22:16:12Multiply perfect Hemiperfect Hyperperfect Superperfect Unitary perfect Semiperfect Practical Descartes Erdős–Nicolas With many divisors Abundant Primitive...
Click to read more »Centered heptagonal number
Kamis, 2024-05-23 08:02:51perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Kaplansky's theorem on projective modules
Rabu, 2026-04-22 08:31:09the inspiration for a major portion of the results" in the theory of semiperfect rings. The proof of the theorem is based on two lemmas, both of which...
Click to read more »Colossally abundant number
Sabtu, 2026-08-15 11:42:35Multiply perfect Hemiperfect Hyperperfect Superperfect Unitary perfect Semiperfect Practical Descartes Erdős–Nicolas With many divisors Abundant Primitive...
Click to read more »Squared triangular number
Sabtu, 2026-08-22 06:43:48perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Oswaldo Lezama
Jumat, 2025-11-28 15:04:58Borevich and the work was titled ″The Group of the Invertible Elements of a Semiperfect Ring″. He obtained the title in 1983. In 1984 he came back to Bucaramanga...
Click to read more »Krull–Schmidt category
Kamis, 2026-04-30 17:37:21C has split idempotents and the endomorphism ring of every object is semiperfect. One has the analogue of the Krull–Schmidt theorem in Krull–Schmidt categories:...
Click to read more »Lucky number
Sabtu, 2026-07-18 21:48:32perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Equidigital number
Jumat, 2026-01-30 22:34:30Multiply perfect Hemiperfect Hyperperfect Superperfect Unitary perfect Semiperfect Practical Descartes Erdős–Nicolas With many divisors Abundant Primitive...
Click to read more »Almost perfect number
Sabtu, 2025-11-01 09:53:24Multiply perfect Hemiperfect Hyperperfect Superperfect Unitary perfect Semiperfect Practical Descartes Erdős–Nicolas With many divisors Abundant Primitive...
Click to read more »Rough number
Kamis, 2026-03-26 09:54:38Multiply perfect Hemiperfect Hyperperfect Superperfect Unitary perfect Semiperfect Practical Descartes Erdős–Nicolas With many divisors Abundant Primitive...
Click to read more »Highly abundant number
Senin, 2023-09-25 11:30:37Multiply perfect Hemiperfect Hyperperfect Superperfect Unitary perfect Semiperfect Practical Descartes Erdős–Nicolas With many divisors Abundant Primitive...
Click to read more »Strobogrammatic number
Rabu, 2026-06-10 04:21:14perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Centered hexagonal number
Minggu, 2026-03-15 21:33:20perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Super-Poulet number
Sabtu, 2025-05-24 21:09:31perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Lucas–Carmichael number
Minggu, 2026-08-16 07:10:19perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Multiply perfect number
Minggu, 2026-07-19 19:53:36Multiply perfect Hemiperfect Hyperperfect Superperfect Unitary perfect Semiperfect Practical Descartes Erdős–Nicolas With many divisors Abundant Primitive...
Click to read more »Triangular number
Rabu, 2026-08-05 04:56:36perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Cube (algebra)
Kamis, 2026-08-13 22:08:54perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Centered nonagonal number
Rabu, 2026-04-29 13:04:25perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Vampire number
Jumat, 2025-09-19 21:49:55perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Smarandache–Wellin number
Senin, 2025-05-19 16:41:59perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Smooth number
Rabu, 2026-05-20 21:23:21Multiply perfect Hemiperfect Hyperperfect Superperfect Unitary perfect Semiperfect Practical Descartes Erdős–Nicolas With many divisors Abundant Primitive...
Click to read more »List of integer sequences
Minggu, 2026-06-28 03:50:33number > a(n − 1) which is a unique sum of two distinct earlier terms; semiperfect. A002858 Prime knots 0, 0, 1, 1, 2, 3, 7, 21, 49, 165, 552, 2176, 9988...
Click to read more »Divisor function
Rabu, 2026-08-19 10:07:30Multiply perfect Hemiperfect Hyperperfect Superperfect Unitary perfect Semiperfect Practical Descartes Erdős–Nicolas With many divisors Abundant Primitive...
Click to read more »Harshad number
Sabtu, 2026-08-01 15:11:11perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Ordered Bell number
Rabu, 2026-04-08 18:16:58perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Smith number
Senin, 2025-11-10 05:44:39perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Telephone number (mathematics)
Jumat, 2026-08-21 17:07:50perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Krull–Schmidt theorem
Minggu, 2026-03-08 18:15:34strongly indecomposable, as are indecomposable projective modules over semiperfect rings. In general, the theorem fails if one only assumes that the module...
Click to read more »Stirling numbers of the second kind
Selasa, 2026-08-18 19:55:30perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Double Mersenne number
Jumat, 2026-01-02 08:56:03perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Square number
Kamis, 2026-08-13 09:23:35perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Pell number
Minggu, 2026-08-09 04:55:06perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Mersenne prime
Sabtu, 2026-05-30 07:19:21perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Glossary of ring theory
Rabu, 2026-08-19 09:49:22projective as modules, they are not always injective as modules. semiperfect A semiperfect ring is a ring R such that, for the Jacobson radical J(R) of R...
Click to read more »Happy number
Jumat, 2026-07-17 10:55:22perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Centered dodecahedral number
Jumat, 2024-12-13 07:17:41perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Perrin number
Rabu, 2025-10-08 23:25:58perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Repdigit
Rabu, 2026-05-13 21:38:24perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Morita equivalence
Jumat, 2026-03-27 03:58:31nonsingular right (or left) coherent semiprimary, right (or left) perfect, semiperfect semilocal Examples of properties which are not Morita invariant include...
Click to read more »Integer factorization
Senin, 2026-08-03 00:46:22Multiply perfect Hemiperfect Hyperperfect Superperfect Unitary perfect Semiperfect Practical Descartes Erdős–Nicolas With many divisors Abundant Primitive...
Click to read more »Göbel's sequence
Jumat, 2026-01-30 06:36:28perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Amicable numbers
Jumat, 2026-07-10 02:49:46Multiply perfect Hemiperfect Hyperperfect Superperfect Unitary perfect Semiperfect Practical Descartes Erdős–Nicolas With many divisors Abundant Primitive...
Click to read more »Idoneal number
Jumat, 2025-04-04 03:12:30perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Keith number
Sabtu, 2025-12-06 05:29:46perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Pandigital number
Sabtu, 2026-08-15 18:14:35perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Untouchable number
Senin, 2026-06-15 09:50:31perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Primorial
Jumat, 2026-08-21 18:38:22perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Semi-local ring
Rabu, 2026-04-22 08:20:11(right/left/two-sided) ideal. Any right or left Artinian ring, any serial ring, and any semiperfect ring is semi-local. The quotient Z / m Z {\displaystyle \mathbb {Z} /m\mathbb...
Click to read more »Projective cover
Selasa, 2026-05-05 02:46:46A ring is called semiperfect if every finitely generated left (right) R-module has a projective cover in R-Mod (Mod-R). "Semiperfect" is a left-right...
Click to read more »Quasi-Frobenius ring
Rabu, 2026-04-22 08:38:49Artinian rings with a Nakayama permutation. For an Artinian ring, or a semiperfect ring R {\displaystyle R} in general, we can define a Nakayama permutation...
Click to read more »Digital root
Rabu, 2026-08-12 12:38:31perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Lazy caterer's sequence
Jumat, 2026-08-21 17:08:12perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Palindromic number
Jumat, 2026-07-17 01:12:01perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Carmichael number
Jumat, 2026-07-10 02:49:50perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Highly cototient number
Sabtu, 2025-05-10 02:37:23perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Powerful number
Senin, 2025-11-10 00:08:33Multiply perfect Hemiperfect Hyperperfect Superperfect Unitary perfect Semiperfect Practical Descartes Erdős–Nicolas With many divisors Abundant Primitive...
Click to read more »Cunningham number
Rabu, 2026-08-12 14:43:24perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Regular number
Selasa, 2026-06-23 07:30:45Multiply perfect Hemiperfect Hyperperfect Superperfect Unitary perfect Semiperfect Practical Descartes Erdős–Nicolas With many divisors Abundant Primitive...
Click to read more »Pronic number
Jumat, 2026-08-07 10:32:39Multiply perfect Hemiperfect Hyperperfect Superperfect Unitary perfect Semiperfect Practical Descartes Erdős–Nicolas With many divisors Abundant Primitive...
Click to read more »Perfect power
Kamis, 2025-11-13 18:45:20Multiply perfect Hemiperfect Hyperperfect Superperfect Unitary perfect Semiperfect Practical Descartes Erdős–Nicolas With many divisors Abundant Primitive...
Click to read more »Friendly number
Minggu, 2026-06-28 16:18:12Multiply perfect Hemiperfect Hyperperfect Superperfect Unitary perfect Semiperfect Practical Descartes Erdős–Nicolas With many divisors Abundant Primitive...
Click to read more »List of abstract algebra topics
Senin, 2026-03-30 15:49:10Cohen–Macaulay ring Gorenstein ring Artinian ring, Noetherian ring Perfect ring, semiperfect ring Baer ring, Rickart ring Lie ring, Lie algebra Ideal (Lie algebra)...
Click to read more »Euler numbers
Minggu, 2026-07-19 21:13:28perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Cyclic number
Rabu, 2026-07-22 03:22:08perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Sublime number
Selasa, 2026-07-14 17:20:13Multiply perfect Hemiperfect Hyperperfect Superperfect Unitary perfect Semiperfect Practical Descartes Erdős–Nicolas With many divisors Abundant Primitive...
Click to read more »836 (number)
Senin, 2026-08-24 10:11:23it is an abundant number, but no subset sums to 836, so it is not a semiperfect number; therefore it is a weird number. Besides, 836 is the smallest...
Click to read more »Eulerian number
Jumat, 2026-08-21 17:06:02perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Giuga number
Minggu, 2026-04-05 15:40:56perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Deficient number
Jumat, 2026-07-10 02:49:59Multiply perfect Hemiperfect Hyperperfect Superperfect Unitary perfect Semiperfect Practical Descartes Erdős–Nicolas With many divisors Abundant Primitive...
Click to read more »Octagonal number
Minggu, 2025-11-23 22:47:55perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Centered pentagonal number
Selasa, 2026-05-26 21:17:25perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Thabit number
Senin, 2025-11-10 05:44:49perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Square-free integer
Jumat, 2026-07-10 02:51:03Multiply perfect Hemiperfect Hyperperfect Superperfect Unitary perfect Semiperfect Practical Descartes Erdős–Nicolas With many divisors Abundant Primitive...
Click to read more »Stirling number
Jumat, 2026-08-21 20:37:19perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Hexagonal number
Selasa, 2026-08-18 02:02:55perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Magic cube (disambiguation)
Senin, 2026-05-18 01:32:53cube Pandiagonal magic cube Pantriagonal magic cube Perfect magic cube Semiperfect magic cube Simple magic cube Magic hypercube Magic square This disambiguation...
Click to read more »Unusual number
Rabu, 2026-04-15 07:50:19Multiply perfect Hemiperfect Hyperperfect Superperfect Unitary perfect Semiperfect Practical Descartes Erdős–Nicolas With many divisors Abundant Primitive...
Click to read more »Transposable integer
Sabtu, 2026-08-22 18:24:52perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Eighth power
Senin, 2026-08-10 23:26:42perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Extravagant number
Jumat, 2024-12-13 07:45:32Multiply perfect Hemiperfect Hyperperfect Superperfect Unitary perfect Semiperfect Practical Descartes Erdős–Nicolas With many divisors Abundant Primitive...
Click to read more »Serial module
Jumat, 2026-01-02 09:11:53and eiR is a local, uniserial module. This indicates that R is also a semiperfect ring, which is a stronger condition than being a semilocal ring. Köthe...
Click to read more »Figurate number
Selasa, 2025-09-02 16:42:28perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Narcissistic number
Rabu, 2025-10-01 02:38:48perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Pyramidal number
Jumat, 2026-08-21 17:07:16perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Persistence of a number
Kamis, 2024-10-31 17:15:33perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Polygonal number
Sabtu, 2026-08-15 04:50:26perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Sierpiński number
Senin, 2026-08-10 16:54:00perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Digit sum
Kamis, 2026-07-30 04:36:54perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Superabundant number
Jumat, 2026-02-13 09:45:44Multiply perfect Hemiperfect Hyperperfect Superperfect Unitary perfect Semiperfect Practical Descartes Erdős–Nicolas With many divisors Abundant Primitive...
Click to read more »Nonagonal number
Jumat, 2024-12-13 03:25:50perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Fermat number
Rabu, 2026-06-10 15:16:52perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Sixth power
Minggu, 2025-12-28 01:09:20perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Amicable triple
Rabu, 2026-08-12 10:47:49Multiply perfect Hemiperfect Hyperperfect Superperfect Unitary perfect Semiperfect Practical Descartes Erdős–Nicolas With many divisors Abundant Primitive...
Click to read more »Refactorable number
Senin, 2026-08-03 09:10:00perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Descartes number
Rabu, 2026-07-08 22:05:16Multiply perfect Hemiperfect Hyperperfect Superperfect Unitary perfect Semiperfect Practical Descartes Erdős–Nicolas With many divisors Abundant Primitive...
Click to read more »Prime power
Rabu, 2026-01-14 20:18:22perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Perfect digit-to-digit invariant
Selasa, 2025-11-18 00:04:24perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Decagonal number
Selasa, 2025-08-19 10:40:39perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Seventh power
Kamis, 2025-12-18 00:48:48perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Fuss–Catalan number
Jumat, 2026-08-21 18:35:51perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Ban number
Senin, 2026-06-22 14:27:57perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Sorting number
Kamis, 2025-12-18 01:10:43perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Ulam number
Senin, 2025-11-10 05:44:51perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Cake number
Senin, 2026-02-23 01:18:56perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Arithmetic number
Selasa, 2025-10-21 02:53:08perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Hilbert number
Senin, 2025-11-10 05:44:04perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Jacobsthal number
Senin, 2026-08-24 04:03:08perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Leonardo number
Selasa, 2026-08-04 02:57:13perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Polite number
Selasa, 2024-10-15 19:37:21perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Stirling numbers of the first kind
Rabu, 2026-08-19 05:58:48perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Factorion
Senin, 2026-04-27 20:01:14perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Self-descriptive number
Jumat, 2026-02-27 17:11:46perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Dudeney number
Rabu, 2025-11-26 04:50:09perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Euclid number
Senin, 2025-11-10 05:43:44perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Automorphic number
Kamis, 2025-04-24 02:50:23perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Sociable number
Jumat, 2026-07-10 02:50:58Multiply perfect Hemiperfect Hyperperfect Superperfect Unitary perfect Semiperfect Practical Descartes Erdős–Nicolas With many divisors Abundant Primitive...
Click to read more »Woodall number
Kamis, 2026-04-23 06:12:19perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Narayana number
Jumat, 2026-08-21 18:41:32perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Friedman number
Kamis, 2026-03-05 06:50:23perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Dedekind number
Kamis, 2026-05-14 12:04:42perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Wilson prime
Jumat, 2026-08-21 20:44:56perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Aliquot sequence
Sabtu, 2026-01-24 03:00:40Multiply perfect Hemiperfect Hyperperfect Superperfect Unitary perfect Semiperfect Practical Descartes Erdős–Nicolas With many divisors Abundant Primitive...
Click to read more »Quasiperfect number
Minggu, 2025-09-21 17:18:12Multiply perfect Hemiperfect Hyperperfect Superperfect Unitary perfect Semiperfect Practical Descartes Erdős–Nicolas With many divisors Abundant Primitive...
Click to read more »Elliptic pseudoprime
Minggu, 2026-03-29 16:32:35perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Centered polygonal number
Minggu, 2025-10-26 18:38:28perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Achilles number
Jumat, 2026-06-26 19:45:29Multiply perfect Hemiperfect Hyperperfect Superperfect Unitary perfect Semiperfect Practical Descartes Erdős–Nicolas With many divisors Abundant Primitive...
Click to read more »Knödel number
Senin, 2025-11-10 05:44:10perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Sum-product number
Selasa, 2026-05-26 02:21:54perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Padovan sequence
Minggu, 2026-05-17 21:09:19perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Wedderburn–Etherington number
Senin, 2025-06-16 05:27:05perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Hyperperfect number
Rabu, 2026-07-22 23:50:01Multiply perfect Hemiperfect Hyperperfect Superperfect Unitary perfect Semiperfect Practical Descartes Erdős–Nicolas With many divisors Abundant Primitive...
Click to read more »Multiplicative digital root
Rabu, 2026-01-14 16:24:24perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Fortunate number
Sabtu, 2026-08-15 23:58:55perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Almost prime
Sabtu, 2025-11-29 09:26:51perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Centered cube number
Minggu, 2025-03-23 07:02:34perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Centered decagonal number
Senin, 2024-11-11 23:16:19perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Jordan–Pólya number
Jumat, 2026-08-21 19:52:23perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Betrothed numbers
Sabtu, 2026-03-14 14:01:57Multiply perfect Hemiperfect Hyperperfect Superperfect Unitary perfect Semiperfect Practical Descartes Erdős–Nicolas With many divisors Abundant Primitive...
Click to read more »Superperfect number
Rabu, 2026-07-22 07:33:33Multiply perfect Hemiperfect Hyperperfect Superperfect Unitary perfect Semiperfect Practical Descartes Erdős–Nicolas With many divisors Abundant Primitive...
Click to read more »Nontotient
Selasa, 2025-07-01 00:27:18perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Fifth power (algebra)
Sabtu, 2025-12-06 20:47:11perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Frugal number
Jumat, 2024-12-13 06:29:19Multiply perfect Hemiperfect Hyperperfect Superperfect Unitary perfect Semiperfect Practical Descartes Erdős–Nicolas With many divisors Abundant Primitive...
Click to read more »Square triangular number
Selasa, 2026-05-19 23:08:10perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Wolstenholme number
Jumat, 2024-12-13 04:52:42perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Harmonic divisor number
Kamis, 2026-07-30 08:20:51Multiply perfect Hemiperfect Hyperperfect Superperfect Unitary perfect Semiperfect Practical Descartes Erdős–Nicolas With many divisors Abundant Primitive...
Click to read more »Pentatope number
Minggu, 2025-08-17 20:16:25perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Evil number
Senin, 2026-06-08 01:07:02perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Centered icosahedral number
Jumat, 2024-12-13 05:20:08perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Pseudoprime
Jumat, 2026-07-10 02:50:51perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Motzkin number
Senin, 2025-11-10 05:44:23perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Stable module category
Kamis, 2026-05-28 21:30:49general rings. When R is perfect (or M is finitely generated and R is semiperfect), then Ω(M) can be defined as the kernel of the projective cover, giving...
Click to read more »Self number
Minggu, 2025-08-03 04:34:47perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Erdős–Nicolas number
Jumat, 2026-08-21 17:06:38Multiply perfect Hemiperfect Hyperperfect Superperfect Unitary perfect Semiperfect Practical Descartes Erdős–Nicolas With many divisors Abundant Primitive...
Click to read more »Wall–Sun–Sun prime
Jumat, 2026-08-21 17:08:52perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Meertens number
Rabu, 2025-04-23 02:37:00perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Centered tetrahedral number
Kamis, 2025-12-18 00:47:43perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Somer–Lucas pseudoprime
Kamis, 2025-10-09 05:31:33perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Lucas pseudoprime
Sabtu, 2026-01-24 16:29:31perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Delannoy number
Senin, 2025-11-10 05:43:40perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Centered octagonal number
Selasa, 2026-04-21 12:02:26perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Undulating number
Jumat, 2024-12-13 06:41:38perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Sparsely totient number
Senin, 2026-02-23 00:07:11perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Odious number
Senin, 2026-06-08 01:35:10perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Lychrel number
Senin, 2026-08-17 08:54:22perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Power of three
Selasa, 2025-09-09 06:10:09perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Erdős–Woods number
Kamis, 2025-12-18 00:45:48perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Leyland number
Sabtu, 2026-08-22 23:31:52perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Square pyramidal number
Jumat, 2026-06-12 07:56:58perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Heptagonal number
Jumat, 2024-12-13 05:02:43perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Primary pseudoperfect number
Kamis, 2026-07-30 02:24:20perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Blum integer
Selasa, 2026-03-31 08:35:36perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Digit-reassembly number
Jumat, 2024-12-13 05:53:20perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Lucky numbers of Euler
Rabu, 2026-06-24 04:50:03perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Pernicious number
Kamis, 2025-03-06 03:14:22perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Riesel number
Senin, 2026-04-06 03:16:38perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Williams number
Jumat, 2024-05-31 13:28:13perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Fermat pseudoprime
Jumat, 2026-07-10 02:50:24perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Lah number
Jumat, 2026-08-21 19:51:39perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Centered polyhedral number
Jumat, 2024-12-13 06:57:54perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Primeval number
Sabtu, 2025-11-15 20:04:24perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Schröder number
Kamis, 2025-10-09 00:26:38perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Cullen number
Kamis, 2026-04-23 06:13:28perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Euler pseudoprime
Selasa, 2026-01-06 02:38:24perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Nonhypotenuse number
Minggu, 2025-10-19 09:00:17perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Størmer number
Senin, 2026-05-25 06:18:58perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Icosahedral number
Jumat, 2024-12-13 07:12:46perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Perfect digital invariant
Rabu, 2025-05-21 01:36:14perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Cyclic number (group theory)
Jumat, 2026-03-20 02:22:59perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Strong pseudoprime
Rabu, 2026-02-11 03:08:38perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Löschian number
Senin, 2025-06-23 19:12:35perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Highly totient number
Senin, 2025-05-05 04:28:55perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Hooley's delta function
Kamis, 2026-08-20 10:57:43perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Catalan pseudoprime
Jumat, 2025-08-08 13:57:46perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Perfect totient number
Jumat, 2026-01-02 09:08:58perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Aronson's sequence
Senin, 2022-11-21 20:52:24perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Wolstenholme prime
Jumat, 2026-08-21 17:09:52perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Lobb number
Jumat, 2024-12-13 06:07:49perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Euler–Jacobi pseudoprime
Jumat, 2025-06-20 04:10:45perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Stella octangula number
Jumat, 2025-06-13 12:10:49perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Dodecagonal number
Sabtu, 2025-03-15 06:43:04perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Frobenius pseudoprime
Rabu, 2026-08-12 21:16:02perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Dodecahedral number
Jumat, 2024-12-13 08:02:05perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Centered octahedral number
Selasa, 2025-08-19 19:20:04perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Amenable number
Rabu, 2026-08-12 13:01:15perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
Click to read more »Noncototient
Sabtu, 2025-07-26 06:12:38perfect Perfect Practical Primitive abundant Quasiperfect Refactorable Semiperfect Sublime Superabundant Superior highly composite Superperfect Prime omega...
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