5 ms·That's why he wrote "mostly being odd" and that's why he called it obvious.by tamas 17y agoThat's why he wrote "mostly being odd" and that's why he called it obvious.zeynel1 17y agoYes, I know it's a nitpick but if there is only 1 exception, it is not mostly. If he says mostly, there is a suggestion that there may be other even primes.mquander 17y agoIf you know it's a nitpick, stop picking at nits.