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]

+ The smallest anagraprod "anagram by product" prime. E.g., 2*6=12, 6*1=6, 1*7=7, and 2617 is composed of digits 1, 2, 6, and 7. [Angelini]

(There is one curio for this number that has not yet been approved by an editor.)

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