Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:





MnDetails
81239
Composite: proven not-prime with Lucas-Lehmer test
No factors below 266
TF target 244
P-1
B1 = 1000000000
B2 = 20461169718990
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000002285 / 9201
Estimated T-Level: 41.2 ⓘ
TF below 2^132 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShiftSoftware
VerifiedUnknown22F60Unknown,(aka U)
VerifiedRobert Clark30F91B602DA122F60Windows 16-bit,Prime95,v5,with TF,(aka W5)
VerifiedBrian J. Beesley30F91B602DA122F60Mac,John Sweeney,v1.4,(aka J3)
Verified2015-04-11MadPoo 🙂30F91B602DA122F620257Windows 64-bit,Prime95,v26,(aka We4)
History
DateUserTypeResult
2022-09-25masserNF-PP1Start=2/7, B1=10000000, B2=500000000
2022-09-25masserNF-PP1Start=6/5, B1=5000000, B2=210000000
2022-09-25masserNF-PP1Start=167/13, B1=2500000, B2=85000000
2022-01-11George WoltmanNF-PM1B1=1000000000, B2=20461169718990
2021-12-06George WoltmanNF-PM1B1=300000000, B2=5100926130300
2020-10-10YxinityNFno factor TF: 65-66
2020-10-09YxinityNFno factor TF: 65-66
2018-12-15YxinityNFno factor TF: 64-65
2018-12-14YxinityNFno factor TF: 64-65
2017-01-11snme2pm1NFno factor TF: 63-64
2016-02-23LaurVNFno factor TF: 58-59
2016-02-23LaurVNFno factor TF: 57-58
2015-12-27snme2pm1NFno factor TF: 62-63
2015-04-11MadPoo 🙂C-LL
30F91B602DA122F6
2015-04-03Sid & AndyNFno factor TF: 61-62
2013-10-28lycornNFno factor TF: 60-61
2012-08-29LaurVNF-PM1B1=100000000, B2=2000000000, E=12
2009-01-05Sturle SundeNFno factor TF: 59-60
2003-12-23-anonymous-NF-PM1B1=16777216, B2=1677721600, E=12
2003-11-28-anonymous-NF-PM1B1=8388608, B2=838860800, E=12
2003-08-25-anonymous-NF-PM1B1=4194304, B2=419430400, E=12
2003-06-17-anonymous-NF-PM1B1=2097152, B2=209715200, E=12
2003-05-11-anonymous-NF-PM1B1=1048576, B2=104857600, E=12
2003-04-03-anonymous-NF-PM1B1=262144, B2=26214400, E=30
2003-02-02-anonymous-NF-PM1B1=131072, B2=13107200, E=30
2002-09-29-anonymous-NFno factor TF: 1-57
2002-07-20-anonymous-NF-PM1B1=65536, B2=6553600, E=12
2002-06-09-anonymous-NF-PM1B1=32768, B2=3276800
2001-08-18Alex KruppaNF-PM1B1=1000000, B2=100000000
2001-04-29-anonymous-NF-PM1B1=100000, B2=10000000
2000-11-25-anonymous-NFno factor TF: 1-56
2000-04-12-anonymous-NFno factor TF: 1-54
1999-10-21-anonymous-NFno factor TF: 52-53