8179
This number is a prime.
The largest prime derived from a two-digit prime by inserting the sum of its digits in between. [Loungrides]
The only prime less than a googol of form 2^n-n, where n is an emirp, (n=13). [Loungrides]
(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