Pi

Surreal psychological drama written and directed by Darren Aronofsky.

Maximillian Cohen (Sean Gullette)'s obsession with numbers is causing him migraines and his former teacher Sol (Mark Margolis) advises him to take a break from trying to discover patterns in the stock market.

However, when Max's computer crashes after predicting a market collapse and spitting out a 216-digit number, Max initially dismisses it.

That is, until the prediction comes true, and he realises that the number which he consigned to the trash could be the key he has been searching for.