# 31379

This number is a prime.

The largest prime such that every two consecutive digits is a prime number (31, 13, 37 and 79) and is at the same time a right-truncatable prime (31379, 3137, 313, 31 and 3 are primes). [Rivera]

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