This number is a composite.

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

+ The smallest number that can be expressed as a sum of two distinct primes, each ending with the digit 3, in two different ways (56 = 3 + 53 = 13 + 43). [Sladcik]

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