37
This number is a prime.
Single Curio View: (Seek other curios for this number)
The prime p = 37, and its reversal q = 73, are the only known emirp pair such that p! + 1 and q! + 1 are both primes. [Punches]
Submitted: 1999-09-02 23:40:00; Last Modified: 2009-02-16 02:32:09.
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell