Migration complete - please let us know if anything isn't working.
12641
This number is a prime.
An emirp with both values center squared, i.e, 12641 = 79^2 + 80^2 and 14621 = 85^2 + 86^2. [Adams]
The smallest emirp using all the all-Niven numbers. [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