7523
This number is a prime.
Single Curio View: (Seek other curios for this number)
The largest prime with distinct prime digits that always
yields a prime when its each digit d is placed into the
function 2^d-1. [Bajpai]
Submitted: 2017-07-27 20:23:01; Last Modified: 2020-06-14 22:50:57.
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell