Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

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Exponent Range:










MnStatusDetails
208134677No known factors, not tested for primality
TF
No factors below 281
TF target 279
P-1
B1 = 2600000
B2 = 500258550
ECM
DigitsB1Curves
2550000187 / 280
Estimated T-Level: 23.3 ⓘ
Assigned
AssignedUserWork TypeStage% DoneUpdatedExpired
2024-12-31DobriPRP testPRP19.55 % 2025-01-24
History
DateUserTypeResult
2025-01-20DobriNF
no factor from 2^80 to 2^81
2025-01-12DobriNF
no factor from 2^79 to 2^80
2025-01-09KrieselNF-PP1
Start=199/41, B1=2600000, B2=500000000
2025-01-07KrieselNF-PM1
B1=2600000, B2=500258550
2025-01-06KrieselNF-PP1
Start=2/7, B1=2600000, B2=500000000
2025-01-06KrieselNF-PP1
Start=6/5, B1=2600000, B2=500000000
2025-01-02KrieselNF
no factor from 2^78 to 2^79
2025-01-02KrieselNF
no factor from 2^77 to 2^78
2025-01-01DobriNF-PM1
B1=1893000, B2=191051280
2024-12-30Generic Username 3485NF
no factor from 2^76 to 2^77
2024-11-18SRBaseNF
no factor from 2^75 to 2^76
2024-04-07James HeinrichNF
no factor from 2^68 to 2^69
2023-05-06SRBaseNF
no factor from 2^74 to 2^75
2020-08-26hktNF
no factor from 2^73 to 2^74
2020-08-26hktNF
no factor from 2^72 to 2^73
2020-06-11SRBaseNF
no factor from 2^71 to 2^72
2019-11-25Chabot PrimeNF
no factor from 2^70 to 2^71
2019-02-01Chabot PrimeNF
no factor from 2^69 to 2^70
2017-02-02SADMASTERNF
no factor from 2^68 to 2^69
2016-09-03ANONYMOUSNF
no factor from 2^67 to 2^68
2015-10-09tb65536NF
no factor from 2^66 to 2^67
2013-08-06David CampeauNF
no factor from 2^65 to 2^66
2011-05-12gLaussNF
no factor from 2^64 to 2^65