17491

This number is a prime.

+ Largest known prime partial sum of number of planar maps with n edges. It happens to be an emirp: 1 + 2 + 4 + 14 + 57 + 312 + 2071 + 15030 = 17491 is prime. [Post]

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