1289
This number is a prime.
Just showing those entries submitted by 'Hasler': (Click here to show all)
This Sophie Germain prime is also a twin prime, and the smallest prime having distinct or increasing digits and exactly 5 permutations of its digits prime. [Hasler]
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell