228251

This number is a prime.

Just showing those entries submitted by 'Gaydos': (Click here to show all)

+ 228251, 228311, and 228341 are the first three consecutive Sophie Germain primes that are all Honaker primes. [Gaydos]

Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell