190000061

This number is a prime.

+ The only non-titanic strobogrammatic prime formed by inserting n zeros between 19, 61, i.e., that are the terms in ascending order of the only pair of double-digit prime rotative twins, (case n=5). [Loungrides]

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