Best Theorems!

ITT best theorems you know so far

Picard's Theorem is pretty nifty.

Any entire complex function that omits two values in a constant.

>>6
Indeed, I find that pretty nifty too.

It's also true that for any integer k, there exists a sequence of k numbers, none of which are prime.

Proof:
The integers between [(k+1)! + 2] and [(k+1)! + k+1] form such a sequence