98765432101310123456789
This number is a prime.
987 6543210131 0123456789
Just showing those entries submitted by 'Loungrides': (Click here to show all)
The smallest palindromic prime formed by inserting a palindromic prime in between the sequences of digits in descending and in ascending order. [Loungrides]
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell