2617

This number is a prime.

+ The largest prime index of a mountain prime p in the sequence of mountain primes, i.e., p=123457897654321. [Loungrides]

(There are 3 curios for this number that have not yet been approved by an editor.)

Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell