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Re: 2^57,885,161 1
Posted:
Feb 7, 2013 3:56 PM


On Feb 7, 2:00 pm, Transfer Principle <david.l.wal...@lausd.net> wrote: > On Feb 7, 7:17 am, Frederick Williams <freddywilli...@btinternet.com> > wrote: > > > Sam Wormley wrote: > > > Largest Prime Number Discovered [to date] > > > >http://www.scientificamerican.com/article.cfm?id=largestprimenumber... > > > > The number ? 2 raised to the 57,885,161 power minus 1 ? was > > > > discovered by University of Central Missouri mathematician Curtis > > > > Cooper as part of a giant network of volunteer computers devoted to > > > > finding primes, similar to projects like SETI@Home, which downloads > > > > and analyzes radio telescope data in the Search for Extraterrestrial > > > > Intelligence (SETI). The network, called the Great Internet Mersenne > > > > Prime Search (GIMPS) harnesses about 360,000 processors operating at > > > > 150 trillion calculations per second. This is the third prime number > > > > discovered by Cooper. > > By Cooper or by GIMPS? > > By Cooper. GIMPS itself has discovered 14 primes. > > http://en.wikipedia.org/wiki/Great_Internet_Mersenne_Prime_Search
Cooper found the specific prime, BUT it was a GIMPS *** group effort** that sifted through many many thousands of candidates and eliminated them as possibilities.



