336

This number is a composite.

+ The smallest number which is the sum in two ways of two primes with indices that are primes with prime indices: 59 + 277 = 5 + 331 = 336. [Post]

(There is one curio for this number that has not yet been approved by an editor.)

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