Search results
Results From The WOW.Com Content Network
All integers are either even or odd. A square has even multiplicity for all prime factors (it is of the form a 2 for some a). The first: 1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144 (sequence A000290 in the OEIS). A cube has all multiplicities divisible by 3 (it is of the form a 3 for some a).
A prime number (or prime) is a ... 181–200 1087: 1091: 1093: 1097: 1103: ... A cluster prime is a prime p such that every even natural number k ≤ p − 3 is the ...
A list of articles about numbers (not about numerals). Topics include powers of ten, notable integers, prime and cardinal numbers, and the myriad system.
The even numbers form an ideal in the ring of integers, [13] but the odd numbers do not—this is clear from the fact that the identity element for addition, zero, is an element of the even numbers only. An integer is even if it is congruent to 0 modulo this ideal, in other words if it is congruent to 0 modulo 2, and odd if it is congruent to 1 ...
100 863282×5 5179692 - 1 17 October 2024 3,620,456 101 670490×12 3352450 - 1 17 October 2024 3,617,907 102 4×3 7578378 + 1 9 September 2024 3,615,806 103 11×2 11993994 − 1 15 August 2024 3,610,554 104 3761×2 11978874 − 1 6 July 2022 3,606,004 105 95×2 11954552 − 1 28 May 2024 3,598,681 106 259072×5 5136295 − 1 28 October 2024 ...
Mersenne primes and perfect numbers are two deeply interlinked types of natural numbers in number theory. Mersenne primes, named after the friar Marin Mersenne, are prime numbers that can be expressed as 2 p − 1 for some positive integer p. For example, 3 is a Mersenne prime as it is a prime number and is expressible as 2 2 − 1.
304 is an even composite number with two prime factors. [1] 304 is the sum of consecutive primes in two different ways: [2] It is the sum of 41+43+47+53+59+61 and of 23+29+31+37+41+43+47+53. 304 is a primitive semiperfect number meaning that it is a semiperfect number that is not divisible by any other semiperfect number. [3]
228 is a refactorable number [1] and a practical number. [2] There are 228 matchings in a ladder graph with five rungs. [3] 228 is the smallest even number n such that the numerator of the nth Bernoulli number is divisible by a nontrivial square number that is relatively prime to n.