12671
This number is a prime.
Just showing those entries submitted by 'Firoozbakht': (Click here to show all)
The smallest prime p such that the palindromic number p*10^1000 + reversal(p) is a probable prime. [Firoozbakht]
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell