656
This number is a composite.
656 = π(6*5*6) * phi(6+5+6). Note that 656 is the
smallest multi-digit number with this property. [Firoozbakht]
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell
This number is a composite.
656 = π(6*5*6) * phi(6+5+6). Note that 656 is the
smallest multi-digit number with this property. [Firoozbakht]