# Prime number/Related Articles

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*See also changes related to Prime number, or pages that link to Prime number or to this page or whose text contains "Prime number".*

## Parent topics

- Integer [r]: The positive natural numbers (1, 2, 3, …), their negatives (−1, −2, −3, ...) and the number zero.
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## Subtopics

- Fermat prime [r]:
*Add brief definition or description* - Mersenne prime [r]:
*Add brief definition or description* - Sophie Germain prime [r]: Any prime number p such that 2p + 1 is also prime.
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- Pseudoprime [r]: Probable prime (an integer which shares a property common to all prime numbers) which is not actually prime.
^{[e]} - Prime Number Theorem [r]: The number of primes up to some limit
*X*is asymptotic to*X*divided by the logarithm of*X*.^{[e]} - Unique factorization [r]: Every positive integer can be expressed as a product of prime numbers in essentially only one way.
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