With the advent of Bernhard Riemann’s zeta-hypothesis, the study of prime numbers took on astonishing new dimensions—including a way to predict the appearance of primes. This program focuses on the numerical landscape which Riemann’s calculations opened up and examines the work of subsequent mathematicians who challenged the notion of a finite set of prime numbers. Using state-of-the-art 3-D animation, the film guides viewers through the zero-punctuated pattern that Riemann unveiled. It also describes the friendship between G. H. Hardy and Srinivasa Ramanujan and the difficulties both men experienced as they confronted problems in number theory. Produced by the Open University. (28 minutes)