709
This number is a prime.
Single Curio View: (Seek other curios for this number)
The smallest prime p for which p and p^2 have the same sum
of squares of digits. [Gaydos]
Submitted: 2021-11-09 10:02:47; Last Modified: 2026-01-25 14:17:24.
Printed from the PrimePages <t5k.org> © G. L. Honaker and Reginald McLean