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Difference between revisions of "Sophie Germain prime"
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− | A [[prime | + | A [[prime]] number p is called a '''Sophie Germain prime''' if 2p + 1 is also prime. For example, 23 is a Sophie Germain prime because it is a prime and 2*23+1 = 47, also prime. |
It is not known whether there are infinitely many Sophie Germain primes. | It is not known whether there are infinitely many Sophie Germain primes. |
Revision as of 11:16, 6 February 2019
A prime number p is called a Sophie Germain prime if 2p + 1 is also prime. For example, 23 is a Sophie Germain prime because it is a prime and 2*23+1 = 47, also prime.
It is not known whether there are infinitely many Sophie Germain primes.
List of Sophie Germain primes
The next table includes the first 500 Sophie Germain primes.
ToDo: List of primes as document