Prima obsession

In August 1859, Bernhard Riemann, a little-known 32-year-old mathematician, presented a paper to the Berlin Academy titled "On the Number of Prime Numbers Smaller than a Given Value." In it, he made an incidental comment on a simple and straightforward question of arithmetic, developing a hypothesis that defined a precise formula for locating and identifying the occurrence of prime numbers. Alternating biography and history with extraordinarily lucid mathematical exposition, Prime Obsession is a fascinating account of an epic mathematical mystery that continues to challenge and excite the world.