1913
This number is a prime.
Single Curio View: (Seek other curios for this number)
The difference between an emirp and its reverse is always divisible by 18. So is 3191 - 1913 = 71 * 18. But, 1913 is
the smallest emirp such that the difference is 18 times an emirp. [Poo Sung]
Submitted: 2018-05-22 13:16:56; Last Modified: 2018-05-22 13:25:14.
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell