In mathematics, the Riemann hypothesis is the conjecture
that the Riemann zeta function has its zeros only at the negative even integers and complex numbers
with real part 1/2. Many consider it to be the most important unsolved problem in pure mathematics.
It is of great interest in number theory because it implies results about the distribution of prime
numbers. It was proposed by Bernhard Riemann (1859), after whom it is named.
(straight from
Wikipedia)