Hacker News new | ask | show | jobs
by hurtigare 1053 days ago
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.