10000...00001 (131-digits)
This number is a prime.
1 0000000000 0000000000 0000000000 0000000000 0000000000 0000000000
0001110000 0000000000 0000000000 0000000000 0000000000 0000000000 0000000001
The smallest palindromic prime larger than a googol that is of palindromic prime length. Note also that it is comprised of only binary digits, and has prime digital sum. [Patterson]
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell