This number is a composite.
136 is the first sum of squares (a^2 + b^2), where both a and b have more than one prime factor. [Hunter]
The smallest Hoax number whose the reversal is prime. [Loungrides]
(There are 4 curios for this number that have not yet been approved by an editor.)
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell