11111...79999 (40-digits)

This number is a prime.

                                 1111111112 2233333333 4445556677 7777779999

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

Least integer that consists of exactly the digits (with multiplicity) of the first 22 primes. Not only is this number prime, but also an emirp. [Chandler]