19

This number is a prime.

Single Curio View:   (Seek other curios for this number)
19 is the only known prime of the form n^n - 8. The next prime in this form (if it exists) will have more than 34000 digits. [Firoozbakht]

Submitted: 2009-11-22 06:06:34;   Last Modified: 2009-11-23 04:58:20.
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell