20000...00041 (42-digits)
This number is a prime.
20 0000000000 0000000000 0000000000 0000000041
The only non-titanic prime of form 2*10^p+p, where p is a prime ending with 1. [Loungrides]
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell