I won

Cool

Even 120 and 2016

Is 496 3rd perfect number?

How it works: 1+2=3 3 is prime 3×2=6 1+2+4=7 7 is prime 7×4=28 1+2+4+8=15 15 is not prime 1+2+4+8+16=31 31 is prime 31×16=496...

Wow