18149
This number is a prime.
The first of five consecutive 5-digit primes in the first case of primes consisting only of nonprime digits, i.e., 18149, 18169, 18181, 18191, 18199. Can you find the next one case? [Loungrides]
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell