This number is a composite.

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

+ Let this number be C. This is the smallest number that can be written as 2a^2 or as 3b^3, for which C+1 and C-1 are both prime. [Hartley]

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