To Infinity and Beyond

S1, E4: In the final part of this BBC science documentary, Marcus du Sautoy investigates the great problems of mathematics that remain unsolved and the minds that tried to decipher them, including Cantor's work on infinity and conjecture about chaos theory from Poincare. But will anyone ever reconcile Riemann's hypothesis on prime numbers, which carries with it a $1million prize for whoever can crack it?