This number is a prime.

+ The prime number 5471 is equal to the square of 74 minus 5. I hope you didn't miss the remarkable palindromic sequence of digits used in the former sentence (5471745). [Leonardis]

(There is one curio for this number that has not yet been approved by an editor.)

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