11111313171722335577

This number is a prime.

                                                       1111131317 1722335577

+ The smallest prime obtained by repeating twice each of the first seven primes, 11, 13, 17, 2, 3, 5, 7. [Loungrides]

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