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 <primes.utm.edu> © G. L. Honaker and Chris K. Caldwell