18281
This number is a composite.
The smallest non-trivial palindrome n such that 2*n+1 (2*18281+1 = 36563) is a palindromic prime. [Jha]
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell
This number is a composite.
The smallest non-trivial palindrome n such that 2*n+1 (2*18281+1 = 36563) is a palindromic prime. [Jha]