514
This number is a composite.
514!/415! + 1 is prime. [Firoozbakht]
(There is one curio for this number that has not yet been approved by an editor.)
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell
This number is a composite.
514!/415! + 1 is prime. [Firoozbakht]