18303877

This number is a prime.

Just showing those entries submitted by 'Firoozbakht': (Click here to show all)

+ 18303877 = prime(prime(1!+8!+3!+0!+3!+8!+7!+7!)). It is the smallest number with this property. [Firoozbakht]

Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell