117
This number is a composite.
Just showing those entries submitted by 'Firoozbakht': (Click here to show all)
117 = (1!2 + 1!2 + 7!2) + (π(1)!2 + π(1)!2 + π(7)!2).
Note that 117 is the only number with this property. [Firoozbakht]
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell