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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

GIMPS Milestones Report

Progress toward next GIMPS milestones

Major GIMPS Milestones

November 19, 2014All exponents below 53,000,000 tested at least once.
November 8, 2014Double-checking proves M(32582657) is the 44th Mersenne prime.
February 23, 2014Double-checking proves M(30402457) is the 43rd Mersenne prime.
January 25, 2013Prime M(57885161) discovered!!
December 20, 2012Double-checking proves M(25964951) is the 42nd Mersenne prime.
December 1, 2011Double-checking proves M(24036583) is the 41st Mersenne prime.
July 11, 2010Double-checking proves M(20996011) is the 40th Mersenne prime.
April 12, 2009Prime M(42643801) discovered!!
September 6, 2008Prime M(37156667) discovered!!
August 23, 2008Prime M(43112609) discovered!!
September 4, 2006Prime M(32582657) discovered!
July 10, 2006Double-checking proves M(13466917) is the 39th Mersenne prime.
December 15, 2005Prime M(30402457) discovered!
February 18, 2005Prime M(25964951) discovered!
May 15, 2004Prime M(24036583) discovered!
November 17, 2003Prime M(20996011) is discovered!
February 2, 2003Double-checking proves M(6972593) is the 38th Mersenne prime.
November 14, 2001Prime M(13466917) is discovered!
May 19, 2000Double-checking proves M(2976221) and M(3021377) are the 36th and 37th Mersenne primes.
June 1, 1999Prime M(6972593) is discovered!
December 18, 1998Double-checking proves M(1398269) is the 35th Mersenne prime.
March 29, 1998Double-checking proves M(1257787) is the 34th Mersenne prime.
January 27, 1998Prime M(3021377) is discovered!
August 30, 1997Double-checking proves M(756839) and M(859433) are the 32nd and 33rd Mersenne primes.
August 24, 1997Prime M(2976221) is discovered!
November 13, 1996Prime M(1398269) is discovered!
Third quarter, 1996Double-checking proves M(216091) is the 31st Mersenne prime.

Older and lower profile GIMPS Milestones

November 19, 2014All exponents below 52,000,000 tested at least once.
November 8, 2014All exponents below 32,000,000 double-checked.
October 1, 2014All exponents below 31,000,000 double-checked.
May 1, 2014All exponents below 51,000,000 tested at least once.
April 8, 2014All exponents below 50,000,000 tested at least once.
April 6, 2014All exponents below 49,000,000 tested at least once.
March 26, 2014All exponents below 48,000,000 tested at least once.
March 17, 2014All exponents below 47,000,000 tested at least once.
March 13, 2014All exponents below 46,000,000 tested at least once.
February 14, 2014All exponents below 30,000,000 double-checked.
February 4, 2014All exponents below 29,000,000 double-checked.
January 12, 2014All exponents below 28,000,000 double-checked.
January 9, 2014All exponents below 27,000,000 double-checked.
December 11, 2013All exponents below 45,000,000 tested at least once.
November 9, 2012All exponents below 44,000,000 tested at least once.
September 5, 2012All exponents below M(43112609) tested at least once.
September 5, 2012All exponents below M(42643801) tested at least once.
August 27, 2012All exponents below 25,000,000 double-checked.
April 23, 2011All exponents below 22,000,000 double-checked.
December 25, 2010All exponents below M(37156667) tested at least once.
December 25, 2010All exponents below M(32582657) tested at least once.
July 29, 2010All exponents below M(30402457) tested at least once.
January 7, 2010All exponents below 20,000,000 double-checked.
October 30, 2009All exponents below 19,000,000 double-checked.
April 8, 2009All exponents below M(25964951) tested at least once.
February 23, 2009All exponents below 18,000,000 double-checked.
February 23, 2009All exponents below M(24036583) tested at least once.
July 8, 2008All exponents below 17,000,000 double-checked.
July 4, 2008All exponents below M(20996011) tested at least once.
December 31, 2007All exponents below 20,000,000 tested at least once.
December 3, 2007All exponents below 16,000,000 double-checked.
April 23, 2007All exponents below 15,000,000 double-checked.
September 11, 2006All exponents below 14,000,000 double-checked.
June 13, 2006All exponents below 13,000,000 double-checked.
March 1, 2006All exponents below 17,000,000 tested at least once.
December 24, 2005All exponents below 16,000,000 tested at least once.
April 26, 2005All exponents below 10,000,000 double-checked.
February 23, 2005All exponents below 15,000,000 tested at least once.
October 3, 2004All exponents below M(13466917) tested at least once.
September 17, 2004All exponents below 9,000,000 double-checked.
March 9, 2004All exponents below 12,000,000 tested at least once.
February 23, 2004All exponents below 8,000,000 double-checked.
December 16, 2002All exponents less than 6,000,000 double-checked.
July 19, 2002All exponents below 10,000,000 tested at least once.
May 2, 2002All exponents less than 5,000,000 double-checked.
April 15, 2002All exponents below 9,000,000 tested at least once.
September 25, 2001All exponents below 8,000,000 tested at least once.
July 25, 2001All exponents below M(6972593) tested at least once.
May 20, 2001All exponents less than 4,000,000 double-checked.
April 6, 2001First 10 million digit number sucessfully double-checked.
April 1, 2001All exponents less than 6,000,000 tested at least once.
September 25, 2000First 10 million digit number tested for primality.
March 15, 2000All exponents less than 5,000,000 tested at least once.
October 16, 1999All exponents less than 2,000,000 double-checked.
August 19, 1999All exponents less than 4,000,000 tested at least once.
December 26, 1998All Mersenne numbers less than a million digits tested at least once.
September 26, 1998All exponents below M(3021377) tested at least once.
September 19, 1998All exponents below M(2976221) tested at least once.
March 5, 1998All exponents below 2,000,000 tested at least once.
October 30, 1997All exponents below 1,000,000 double-checked.
October 11, 1997All exponents below M(1398269) tested at least once.
August 28, 1997All exponents below M(1257787) tested at least once.
May 26, 1997All exponents below 1,000,000 tested at least once.
March 28, 1997All exponents below M(859433) tested at least once.
January 15, 1997All exponents below M(756839) tested at least once.