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
986191
Composite: proven not-prime with Lucas-Lehmer test
No factors below 268
TF target 244
P-1
B1 = 50000000
B2 = 1263691439010
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000002447 / 4588
Estimated T-Level: 37.7 ⓘ
TF below 2^120 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShiftSoftware
VerifiedBen Reubenstein9928ABEFD2E39BD70Windows,Prime95,v11,(aka WC)
VerifiedDavid Slowinski1BD70Cray,Slowinski,(aka D5)
VerifiedPaul Victor Novarese9928ABEFD2E39BD70Mlucas,Ernst Mayer,v2.5 and later,(aka E2)
Verified2015-04-11MadPoo 🙂9928ABEFD2E39BD7901057Windows 64-bit,Prime95,v26,(aka We4)
History
DateUserTypeResult
2022-11-11masserNF-PP1Start=2/7, B1=4000000, B2=172000000
2022-11-10masserNF-PP1Start=6/5, B1=2000000, B2=74000000
2022-11-08masserNF-PP1Start=145/29, B1=1000000, B2=32000000
2022-10-09axnNF-PM1B1=50000000, B2=1263691439010
2021-10-29YxinityNFno factor TF: 67-68
2018-12-11lycornNFno factor TF: 66-67
2018-03-11BloodERazorNFno factor TF: 65-66
2016-02-23Mark RoseNFno factor TF: 58-60
2015-04-29snme2pm1NFno factor TF: 64-65
2015-04-29snme2pm1NFno factor TF: 63-64
2015-04-11MadPoo 🙂C-LL
9928ABEFD2E39BD7
2014-04-18alpertronNF-PM1B1=10000000, B2=500000000, E=12
2013-12-08Jerry HallettNFno factor TF: 62-63
2013-12-08Jerry HallettNFno factor TF: 61-62
2013-10-14David CampeauNF-PM1B1=825000, B2=24750000, E=12
2012-02-06JossNF-PM1B1=676534
2011-06-16JossNF-PM1B1=400000
2011-05-31JossNF-PM1B1=200000
2010-05-13Architects CubedNFno factor TF: 60-61
2003-09-09-anonymous-NF-PM1B1=131072, B2=13107200, E=12
2003-08-08-anonymous-NFno factor TF: 1-58
2003-01-25-anonymous-NF-PM1B1=65536, B2=6553600, E=12
2002-08-10-anonymous-NF-PM1B1=32768, B2=3276800, E=12
2002-04-28-anonymous-NF-PM1B1=16384, B2=1638400
2002-03-03-anonymous-NF-PM1B1=4096, B2=409600
2002-01-08-anonymous-NF-PM1B1=2000, B2=200000
2001-11-24-anonymous-NFno factor TF: 1-57
2000-10-22-anonymous-NFno factor TF: 1-56
2000-07-12-anonymous-NFno factor TF: 1-55