KWSN - News Prince
Joined: 01 Aug 2006 Posts: 3853
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Posted: Sat Jun 12, 2010 2:16 pm Post subject: PrimeGrid: News World Record Generalized Woodall Prime |
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Those with triskaidekaphobia can rest at ease tonight!!! A generalized Woodall prime for base 13 has been discovered!!! The prime was found in PrimeGrid's PRPNet and is the largest known generalized Woodall prime:<br /> 563528*13563528-1 The prime is 627,745 digits long and enters Chris Caldwell's <a href="http://primes.utm.edu/primes/" rel="nofollow">The Largest Known Primes Database</a> ranked 1st for generalized Woodall primes and 65th overall. It is the largest non-base 2/non-generalized Fermat prime ever found. The discovery was made by Lennart Vogel (<a href="http://www.primegrid.com/show_user.php?userid=7989" rel="nofollow">lennart SM5YMT</a>) of Sweden using an Intel Q6600 @ 2.4 GHz with 4 GB RAM. This computer took about 3 hours and 54 minutes to complete the probable prime test. It took just over 30 hours to prove primality. For more details, please see the <a href="http://www.primegrid.com/download/gw13-563528.pdf" rel="nofollow">official announcement</a>.
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Source: PrimeGrid: News
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