311

This number is a prime.

Single Curio View:   (Seek other curios for this number)
311 is the eleventh three-digit prime for which the sum of the squares of its digits is also a prime. Note that the sum here is eleven as well. [Trotter]

Submitted: 2001-07-17 15:49:21;   Last Modified: 2008-01-30 17:28:00.
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell