This number is a prime.

Single Curio View:   (Seek other curios for this number)
The larger prime in the only known case of consecutive primes, (523, 541), that have the same sum of digits. Note that their concatenations in order and reverse order, i.e., 523541 and 541523, are both primes. [Loungrides]

Submitted: 2015-10-01 11:36:04;   Last Modified: 2018-02-03 16:34:27.
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell