Zhang's bound reduced to 50,000 by June 29,2013

Created by JoshuaZ on 2013-06-20; known on 2013-06-29; judged right by JoshuaZ on 2013-06-28.

• JoshuaZ estimated 55% on 2013-06-20
• JoshuaZ said “See http://michaelnielsen.org/polymath1/index.php?title=Bounded_gaps_between_primes” on 2013-06-20
• JoshuaZ   judged this prediction right on 2013-06-28.