18446744069414584321

This number is a prime.

                                                       1844674406 9414584321

+ 2^64 - 2^32 + 1 is prime. [Dobb]

(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