What the original commenter dislikes is that a bunch of "brilliant" mathmaticians can't instantly recognize that any number ending with 2 or 5(except 2 and 5)

What the original commenter dislikes is that a bunch of "brilliant" mathmaticians can't instantly recognize that any number ending with 2 or 5(except 2 and 5) can't be a prime. I.e 999999999999995%5=0 999999999999992%2=0 Thus they are not prime numbers.