486

This number is a composite.

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

+ The only sum of a zeroless pandigital expression involving the addition of a Mersenne prime and a Sophie Germain prime, i.e., 127 + 359 = 486. [Gaydos and Honaker]

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