# 94111

This number is a prime.

The emirp ZIP Code of San Francisco, CA. It consists of digits that are perfect squares and the sum of whose digits is a perfect square. This emirp is also the concatenation of two primes, one of which is an emirp and the other is a repunit prime. [Green]

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