13297
This number is a prime.
The smallest prime number that requires 29 steps to reach a palindrome with the reverse-then-add process. [Caldwell]
The smallest Honaker prime p for which Euler's
polynomial (p^2 + p + 41) yields another Honaker prime
(176823547). [Bajpai]
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell