656601

This number is a composite.

Single Curio View:   (Seek other curios for this number)
656601 is the smallest Carmichael number n surrounded by a prime triplet (n-4, n-2, n+2 are all primes). [Yosei]

Submitted: 2019-07-11 11:16:02;   Last Modified: 2019-07-11 12:33:53.
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell