# Sophie Germain 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.

## List of Sophie Germain primes

The next table includes the first 500 Sophie Germain primes.

**ToDo: List of primes as document**