themaninblack
51 has to be the non-prime number that feels the most prime
Seeker of Carcosa
Prime_Minister_KeyesWell, on the surface, it’s just 60-3, so clearly divisible by 3 itself. Now 221, that’s some fuckery.
Dammit, it was right in the post, why did that take me so long?
When I was young I learned that when you add up all the numbers if that number is a multiple of 3 than the original number is also divisible by 3. So 51, 5+1=6 and 6 divisible by 3 and so must 51.