The story started with Gauss, a young german boy who liked to factorise the numbers in his hymn books, whose conjectured approximation to the frequency of the appearance of primes sparked a treasure hunt for a proof, as mathematicians fought to make the magic happen.

Nearly half a century later, a fresh faced Bernhard Riemann thought he had found a way: simply through finding the zeroes of some complex valued function, the result would come as if from nowhere- the end seemed well in sight.

A hundred and twenty years on and still no answer- though its truth or falsehood, which still divides the opinions of the mathematical world, is set to bring order to the seemingly random fluctuations within the primes and change number theory irrevocably.

One of the nine Clay mathematics institute millenium problems, and widely regarded as one of the most- if not the most important unsolved problems in mathematics. Put quite simply: the Riemann Hypothesis is BIG.

Be part of that BIGness as, for one night only, Cosmin Davidescu explains the problem that has baffled the world's finest minds for over a century. Er... then we all get squiffy at the grad. Yay!!