19071979
This number is a prime.
19071979 is "Duke's prime." (John Wayne was born in 1907 and died in 1979.) [Goins]
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell
This number is a prime.
19071979 is "Duke's prime." (John Wayne was born in 1907 and died in 1979.) [Goins]