We all know that 2 is the only even prime number.
We also know that an odd number times an odd number is always an even number. The same is true for multiplying even numbers (even x even = even)
(A*A)+26 can be seen as (ODD*ODD)+EVEN or (EVEN*EVEN)+EVEN. Either way the result is always even and always greater than 2. As such, this expression can never yield a prime result. The answer will always be non-prime.
Edited by Wizzbang, 09 July 2008 - 12:42 PM.