39193...19393 (67-digits)

This number is a prime.

   3919393 9193939193 9391939391 9393919393 9193939193 9391939391 9393919393

+ A prime with prime digital length such that all substrings of length six are also prime. [Patterson]

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