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

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Exponent Range:










MnStatusDetails
1915757TF
No factors below 268
TF target 261
TF below 2^81 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 18200000
B2 = 58341353070
ECM
DigitsB1Curves
2550000280 / 280
30250000106 / 640
Estimated T-Level: 25.8 ⓘ
LL
StatusDateUserResidueShift
VerifiedKim NeveB607D85F648B1AFC0
Verified1999-01-02Stephen WoodB607D85F648B1AFC1439516
Verified2015-07-06MadPooB607D85F648B1AFC634094
History
DateUserTypeResult
2023-10-09Sid & AndyNF-PM1
B1=18200000, B2=58341353070
2023-06-21JossNF-PM1
B1=1915757, B2=5395249860
2023-01-11JossNF-PM1
B1=1915757, B2=1890473970
2022-08-13masserNF-PP1
Start=2/7, B1=1500000, B2=54000000
2019-04-28chuenkitNF
no factor from 2^67 to 2^68
2017-12-18mikrNF-PM1
B1=8000000, B2=320000000, E=12
2017-03-15Smok_bmv NF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2016-02-23Mark RoseNF
no factor from 2^1 to 2^60
2016-02-23Mark RoseNF
no factor from 2^61 to 2^62
2015-10-13ramgeisNF
no factor from 2^65 to 2^66
2015-07-06MadPooC-LL
B607D85F648B1AFC
2015-05-16snme2pm1NF
no factor from 2^64 to 2^65
2015-05-16snme2pm1NF
no factor from 2^63 to 2^64
2011-08-16kurlyNF-PM1
B1=1000000, B2=30000000, E=12
2011-07-17GrunwalderGIMPNF
no factor from 2^1 to 2^63
2009-05-31Architects CubedNF
no factor from 2^60 to 2^61