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

GIMPS Milestones Report

Progress toward next GIMPS milestones (last updated 2017-09-23 18:04:37 UTC, updates every hour)

Major and Recent GIMPS Milestones

September 19, 2017All exponents below 74 million tested at least once.
September 5, 2017All tests below 41 million verified.
September 2, 2016All tests below M(37 156 667) are verified, officially making it the 45th Mersenne prime.
January 7, 2016Prime M(74 207 281) discovered!
January 25, 2013Prime M(57 885 161) discovered!
June 4, 2009Prime M(42 643 801) discovered!
September 6, 2008Prime M(37 156 667) discovered!
August 23, 2008Prime M(43 112 609) discovered!
September 4, 2006Prime M(32 582 657) discovered!
December 15, 2005Prime M(30 402 457) discovered!
February 18, 2005Prime M(25 964 951) discovered!
May 15, 2004Prime M(24 036 583) discovered!
November 17, 2003Prime M(20 996 011) discovered!
November 14, 2001Prime M(13 466 917) discovered!
June 1, 1999Prime M(6 972 593) discovered!
January 27, 1998Prime M(3 021 377) discovered!
August 24, 1997Prime M(2 976 221) discovered!
November 13, 1996Prime M(1 398 269) discovered!

Older and lower profile GIMPS Milestones

DateMiscellaneous milestones
2016-09-02All tests below M(37 156 667) are verified, officially making it the 45th Mersenne prime.
2015-02-03All exponents below 33 219 253 (10 million digits) verified.
2014-11-08All tests below M(32 582 657) are verified, officially making it the 44th Mersenne prime.
2014-08-09First 100 million digit number independently verified - M(345 678 877).
2014-02-23All tests below M(30 402 457) are verified, officially making it the 43rd Mersenne prime.
2013-03-08First 100 million digit number successfully verified - M(383 838 383).
2012-12-20All tests below M(25 964 951) are verified, officially making it the 42nd Mersenne prime.
2012-06-27First 100 million digit number tested for primality without detected errors - M(332 194 529).
2011-12-01All tests below M(24 036 583) are verified, officially making it the 41st Mersenne prime.
2010-07-11All tests below M(20 996 011) are verified, officially making it the 40th Mersenne prime.
2006-07-10All tests below M(13 466 917) are verified, officially making it the 39th Mersenne prime.
2003-02-02All tests below M(6 972 593) are verified, officially making it the 38th Mersenne prime.
2001-04-06First 10 million digit number sucessfully verified.
2000-09-25First 10 million digit number tested for primality.
2000-05-19All tests below M(2 976 221) and M(3 021 377) are verified, officially making them the 36th and 37th Mersenne primes.
1998-12-26All Mersenne numbers less than a million digits tested at least once.
1998-12-18All tests below M(1 398 269) are verified, officially making it the 35th Mersenne prime.
1998-03-29All tests below M(1 257 787) are verified, officially making it the 34th Mersenne prime.
1997-08-30All tests below M(756 839) and M(859 433) are verified, officially making them the 32nd and 33rd Mersenne primes.
1996-Third QuarterAll tests below M(216 091) are verified, officially making it the 31st Mersenne prime.

DateMersenne Prime milestones
2015-10-04All exponents below M(57 885 161) tested at least once.
2012-09-05All exponents below M(43 112 609) tested at least once.
2012-09-05All exponents below M(42 643 801) tested at least once.
2010-12-25All exponents below M(37 156 667) tested at least once.
2010-12-25All exponents below M(32 582 657) tested at least once.
2010-07-29All exponents below M(30 402 457) tested at least once.
2009-04-08All exponents below M(25 964 951) tested at least once.
2009-02-23All exponents below M(24 036 583) tested at least once.
2008-07-04All exponents below M(20 996 011) tested at least once.
2004-10-03All exponents below M(13 466 917) tested at least once.
2001-07-25All exponents below M(6 972 593) tested at least once.
1998-09-26All exponents below M(3 021 377) tested at least once.
1998-09-19All exponents below M(2 976 221) tested at least once.
1997-10-11All exponents below M(1 398 269) tested at least once.
1997-08-28All exponents below M(1 257 787) tested at least once.
1997-03-28All exponents below M(859 433) tested at least once.
1997-01-15All exponents below M(756 839) tested at least once.

DateFirst time checks
2017-09-19All exponents below 74 million tested at least once.
2017-08-06All exponents below 73 million tested at least once.
2017-07-08All exponents below 72 million tested at least once.
2017-03-20All exponents below 71 million tested at least once.
2016-12-29All exponents below 70 million tested at least once.
2016-11-19All exponents below 69 million tested at least once.
2016-09-06All exponents below 68 million tested at least once.
2016-05-25All exponents below 67 million tested at least once.
2016-05-11All exponents below 66 million tested at least once.
2016-05-11All exponents below 65 million tested at least once.
2016-05-11All exponents below 64 million tested at least once.
2016-02-19All exponents below 63 million tested at least once.
2016-02-17All exponents below 62 million tested at least once.
2016-02-17All exponents below 61 million tested at least once.
2015-12-26All exponents below 60 million tested at least once.
2015-12-22All exponents below 59 million tested at least once.
2015-10-04All exponents below 58 million tested at least once.
2015-08-09All exponents below 57 million tested at least once.
2015-08-09All exponents below 56 million tested at least once.
2015-06-06All exponents below 55 million tested at least once.
2015-01-05All exponents below 54 million tested at least once.
2014-11-19All exponents below 53 million tested at least once.
2014-11-19All exponents below 52 million tested at least once.
2014-05-01All exponents below 51 million tested at least once.
2014-04-08All exponents below 50 million tested at least once.
2014-04-06All exponents below 49 million tested at least once.
2014-03-26All exponents below 48 million tested at least once.
2014-03-17All exponents below 47 million tested at least once.
2014-03-13All exponents below 46 million tested at least once.
2013-12-11All exponents below 45 million tested at least once.
2012-11-09All exponents below 44 million tested at least once.
2012-09-05All exponents below 43 million tested at least once.
2012-09-05All exponents below 42 million tested at least once.
2012-08-05All exponents below 41 million tested at least once.
2012-08-02All exponents below 40 million tested at least once.
2012-07-22All exponents below 39 million tested at least once.
2011-07-19All exponents below 38 million tested at least once.
2010-12-25All exponents below 37 million tested at least once.
2010-12-25All exponents below 36 million tested at least once.
2010-12-25All exponents below 35 million tested at least once.
2010-12-25All exponents below 34 million tested at least once.
2010-12-25All exponents below 33 million tested at least once.
2010-12-25All exponents below 32 million tested at least once.
2010-08-06All exponents below 31 million tested at least once.
2010-07-29All exponents below 30 million tested at least once.
2010-07-14All exponents below 29 million tested at least once.
2010-02-10All exponents below 28 million tested at least once.
2009-08-18All exponents below 27 million tested at least once.
2009-04-08All exponents below 26 million tested at least once.
2009-02-25All exponents below 25 million tested at least once.
2009-02-23All exponents below 24 million tested at least once.
2008-12-22*All exponents below 23 million tested at least once.
2008-10-25*All exponents below 22 million tested at least once.
2008-08-19*All exponents below 21 million tested at least once.
2007-12-31All exponents below 20 million tested at least once.
2007-11-17*All exponents below 19 million tested at least once.
2006-10-24All exponents below 18 million tested at least once.
2006-03-01All exponents below 17 million tested at least once.
2005-12-24All exponents below 16 million tested at least once.
2005-02-23All exponents below 15 million tested at least once.
2005-02-12*All exponents below 14 million tested at least once.
2004-10-03*All exponents below 13 million tested at least once.
2004-03-09All exponents below 12 million tested at least once.
2004-01-18*All exponents below 11 million tested at least once.
2002-07-19All exponents below 10 million tested at least once.
2002-04-15All exponents below 9 million tested at least once.
2001-09-25All exponents below 8 million tested at least once.
2001-09-25*All exponents below 7 million tested at least once.
2001-04-01All exponents below 6 million tested at least once.
2000-03-15All exponents below 5 million tested at least once.
1999-08-19All exponents below 4 million tested at least once.
1998-09-26*All exponents below 3 million tested at least once.
1998-03-05All exponents below 2 million tested at least once.
1997-05-26All exponents below 1 million tested at least once.
* = estimated

DateVerification Milestones
2017-09-05All tests below 41 million verified.
2017-05-27All tests below 40 million verified.
2017-03-04All tests below 39 million verified.
2016-11-01All tests below 38 million verified.
2016-09-02All tests below 37 million verified.
2016-06-01All tests below 36 million verified.
2016-01-29All tests below 35 million verified.
2015-05-19All tests below 34 million verified.
2014-12-21All tests below 33 million verified.
2014-11-08All tests below 32 million verified.
2014-10-01All tests below 31 million verified.
2014-02-14All tests below 30 million verified.
2014-02-04All tests below 29 million verified.
2014-01-11All tests below 28 million verified.
2014-01-09All tests below 27 million verified.
2012-12-20All tests below 26 million verified.
2012-08-27All tests below 25 million verified.
2011-12-01All tests below 24 million verified.
2011-12-01All tests below 23 million verified.
2011-04-23All tests below 22 million verified.
2010-07-11All tests below 21 million verified.
2010-01-07All tests below 20 million verified.
2009-10-30All tests below 19 million verified.
2009-02-23All tests below 18 million verified.
2008-07-08All tests below 17 million verified.
2007-12-03All tests below 16 million verified.
2007-04-23All tests below 15 million verified.
2006-09-11All tests below 14 million verified.
2006-06-13All tests below 13 million verified.
2006-06-13All tests below 12 million verified.
2005-12-12*All tests below 11 million verified.
2005-04-26All tests below 10 million verified.
2004-09-17All tests below 9 million verified.
2004-02-23All tests below 8 million verified.
2003-02-27*All tests below 7 million verified.
2002-12-16All tests below 6 million verified.
2002-05-02All tests below 5 million verified.
2001-05-20All tests below 4 million verified.
2000-05-19*All tests below 3 million verified.
1999-10-16All tests below 2 million verified.
1997-10-30All tests below 1 million verified.
* = estimated