1255

This number is a composite.

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

+ 1255 is the smallest composite number such that the digits in its prime factors coincide exactly with the number itself (1255 = 5 * 251). [Heleen]

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