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Finding World Record Primes Since 1996
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GIMPS Success Stories!

GIMPS has discovered thirteen Mersenne primes so far. Could you be next?

  • On April 12, 2009, Odd Magnar Strindmo discovered the 47th known Mersenne prime, 242643801-1.
  • On September 6, 2008, Hans-Michael Elvenich discovered the 46th known Mersenne prime, 237156667-1.
  • On August 23, 2008, Edson Smith discovered the 45th known Mersenne prime, 243112609-1. This is the largest known prime number.
  • On September 4, 2006, Curtis Cooper and Steven Boone discovered the previous record prime, 232582657-1.
  • On December 15, 2005, Curtis Cooper and Steven Boone also discovered the prime, 230402457-1.
  • On February 18, 2005, Dr. Martin Nowak discovered the prime, 225964951-1.
  • On May 15, 2004, Josh Findley discovered the prime, 224036583-1.
  • On November 17, 2003 Michael Shafer found the prime, 220996011-1.
  • On November 14th 2001, Michael Cameron found the prime, 213466917-1.
  • On June 1st 1999, Nayan Hajratwala found the prime, 26972593-1.
  • On January 27th 1998, Roland Clarkson found the prime, 23021377-1.
  • On August 24th 1997, Gordon Spence discovered the prime 22976221-1.
  • In November 1996, Joel Armengaud found GIMPS' first prime, 21398269-1.

  • Newsletters

    Newsletters detailing some of the early history of GIMPS are available. Newsletters are dated: February 24, 1996, February 26, 1996, April 12, 1996, June 11, 1996, July 31, 1996, September 3, 1996, November 1, 1996, November 23, 1996, January 15, 1997, March 11, 1997, May 26, 1997, September 1, 1997, February 2, 1998, May 22, 1998, April 3, 1999, July 6, 1999, October 4, 1999, September 25, 2001, and December 2, 2003.


    Last Updated: June 12, 2009

     

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