72

This number is a composite.

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

+ The smallest number that can be expressed as a sum of two primes, each ending with the digit 1, in two different ways (72 = 11 + 61 = 31 + 41). [Schlesinger]

Printed from the PrimePages <primes.utm.edu> © G. L. Honaker and Chris K. Caldwell