193957
This number is a prime.
193957 = prime(prime((1!!+9!!+3!!+9!!+5!!+7!!)). Note that 193957 is the only number with this property. [Firoozbakht]
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell
This number is a prime.
193957 = prime(prime((1!!+9!!+3!!+9!!+5!!+7!!)). Note that 193957 is the only number with this property. [Firoozbakht]