I know I'm a little early, but here is PI. I DID NOT USE A CALCULATOR!!!!!! Ask @SS--LionBlaze for proof. They're my friend. And they have seen me do it.
Credit to me. -------------------- I memorized this much of PI for a contest in my Honors Math class, but I know someone else is going to win - he has 336 digits of PI memorized :o - so I decided to put my work here.