19482811

This number is a prime.

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

+ The smallest integer that produces six prime numbers when the digits of itself, its square, and its cube are written in both ascending and descending orders. It's also a prime number itself. [Gaydos]

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