21 Oct 12, 01:28AM
(21 Oct 12, 12:47AM)Felix-The-Ghost Wrote: Two is the only even prime number. So any powers of it cannot contain an odd prime factor, which are needed to be written that way.
That begs the question why we need an odd prime? I mean it's true (excluding the case 1=0+1), but you're making too big a leap from "no odd prime factors" to "can't be written as we want".