144169

This number is a prime.

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

+ It is also the concatenation of three squares (144, 16, and 9). Note that sqrt(144) = sqrt(16) x sqrt(9). [Trotter]

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