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:










MnStatusDetails
28035701Factored
FactorDigitsBitsDate
15699992571030.5old
28596415031031.42008-09-08 23:40:42
336428412011135.02008-09-08 23:40:42
276221183388491444.72008-10-01 01:56:33
447460441526391445.32008-10-01 01:56:33
37175462883084411651.72014-07-09 11:53:12
322318660472122011754.82014-08-19 01:51:57
479140527410072871755.42014-08-19 01:51:57
20993284886970836891960.92014-08-19 02:08:03
ECM
DigitsB1Curves
25500003 / 280
Estimated T-Level: 20.1
TF below 2^62 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-11-05ATH578A3FAA575E154F92047861753
Verified2021-03-09Richard Thomas578A3FAA575E154F92353588953
History
DateUserTypeResult
2024-01-28masserNF-PP1
Start=2/7, B1=50000, B2=3500000
2022-06-26LordJuliusNF
no factor from 2^60 to 2^62
2022-01-04Seth_TrNF-PM1
B1=40000000, B2=12001588830
2021-08-06Seth_TrNF
no factor from 2^66 to 2^67
2021-03-09Ben DeloCERT
PRP Certification
Proof certified good
2021-03-09Richard ThomasC-PRP
M28035701/1569999257/2859641503/33642841201/27622118338849/44746044152639/3717546288308441/32231866047212201/47914052741007287/2099328488697083689 : 578A3FAA575E154F
PRP proof power = 9
PRP: Verified
Proof certified good
2019-12-30Seth_TrNF-PM1
B1=20000000, B2=2000000000, E=12
2019-12-18Seth_TrNF-PM1
B1=4000000, B2=400000000, E=12
2019-12-16Seth_TrNF-PM1
B1=1000000, B2=100000000, E=12
2019-12-15Seth_TrNF-PM1
B1=500000, B2=50000000, E=12
2019-12-07Seth_TrNF-PM1
B1=200000, B2=20000000, E=12
2019-12-04Seth_TrNF
no factor from 2^69 to 2^70
2019-12-04Seth_TrNF
no factor from 2^68 to 2^69
2019-06-20Seth_TrNF
no factor from 2^67 to 2^68
2017-11-08ATHNF
no factor from 2^75 to 2^76
2017-11-07ATHNF
no factor from 2^74 to 2^75
2017-11-07ATHNF
no factor from 2^73 to 2^74
2017-11-07ATHNF
no factor from 2^72 to 2^73
2017-11-07ATHNF
no factor from 2^71 to 2^72
2017-11-07ATHNF
no factor from 2^70 to 2^71
2017-11-07ATHNF
no factor from 2^69 to 2^70
2017-11-07ATHNF
no factor from 2^68 to 2^69
2017-11-07ATHNF
no factor from 2^67 to 2^68
2017-11-07ATHNF
no factor from 2^66 to 2^67
2017-11-07ATHNF
no factor from 2^65 to 2^66
2017-11-07ATHNF
no factor from 2^62 to 2^65
2017-11-05ATHC-PRP
M28035701/1569999257/2859641503/33642841201/27622118338849/44746044152639/3717546288308441/32231866047212201/47914052741007287/2099328488697083689 : 578A3FAA575E154F
PRP: Verified
PRP without proof (not generated)
2014-08-19pdazzlF
Factor: 2099328488697083689 / TF: 60-62
2014-08-19pdazzlF
Factor: 47914052741007287 / TF: 50-58
2014-08-19pdazzlF
Factor: 32231866047212201 / TF: 50-58
2014-07-09TJAOIF
Factor: 3717546288308441
2008-10-01markrF
Factor: 44746044152639
2008-10-01markrF
Factor: 27622118338849
2008-09-08Will EdgingtonF
Factor: 33642841201
2008-09-08Will EdgingtonF
Factor: 2859641503