99999999999999999999977
This number is a prime.
999 9999999999 9999999977
The largest prime less than a googol of the form p = 10^n - n (n = 23). [Loungrides]
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell
This number is a prime.
999 9999999999 9999999977
The largest prime less than a googol of the form p = 10^n - n (n = 23). [Loungrides]