9689
This number is a prime.
Just showing those entries submitted by 'Rupinski': (Click here to show all)
29689 - 1 is the largest (as of August 2002) known Mersenne prime with a prime number of digits (2917). [Rupinski]
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell