This number is a prime.

Single Curio View:   (Seek other curios for this number)
The smallest Honaker prime p such that replacing each digit d in decimal expansion of p with d^3 yields a new prime when done recursively three times, i.e., 612041 -> 216180641 (prime); 216180641 -> 8121615120216641 (prime); 8121615120216641 -> 512181216112518081216216641 (prime). [Bajpai]

Submitted: 2018-10-03 01:34:59;   Last Modified: 2020-06-16 00:15:16.
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell