373929373

This number is a prime.

+ 373929373 is the smallest 9-digit bi-truncatable palindromic prime that remains palindromic after each truncation. A bi-truncatable prime remains prime even when both ends are truncated. I.e., 7392937, 39293, 929, and 2 are all primes. [Opao]

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