139

This number is a prime.

Single Curio View:   (Seek other curios for this number)
(1+3+9)^(1+3+9) + sigma(139)^sigma(139) is prime and the largest known of this form. [Sariyar]

Submitted: 2018-12-19 19:26:57;   Last Modified: 2018-12-19 20:12:56.
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell