This number is a prime.
Single Curio View: (Seek other curios for this number)The smallest (the only known) Pell number that is an emirp. Note that the sum of its digits is also emirp. [Loungrides]
Submitted: 2012-03-16 08:18:22; Last Modified: 2020-04-25 15:27:43.
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell