12345678911223344556677

This number is a prime.

                                                   123 4567891122 3344556677

+ The smallest prime formed from the concatenation of the first n palindromes: {1, 2, 3, ..., 66, 77}. [Jha]

Printed from the PrimePages <primes.utm.edu> © G. L. Honaker and Chris K. Caldwell