Math Trek Math Creeping Up on Riemann Mathematicians move a step closer to unraveling the mystery of prime numbers By Julie Rehmeyer April 2, 2008 at 1:58 pm Share this:FacebookTwitterPocketRedditPrintEmail This article is only available to Science News subscribers. Subscribers, enter your e-mail address to access our archives. Client key* E-mail* Log in Not a subscriber? Science News is a nonprofit. Support us by subscribing now. Subscribe