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

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MnStatusDetails
1842497Factored
FactorDigitsBitsDate
863567836256473241468712376.22011-02-07 12:35:38
186260203859706762570844092683.92021-03-01 01:18:59
ECM
DigitsB1Curves
2550000280 / 280
30250000106 / 640
Estimated T-Level: 25.8
TF below 2^81 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Joel Smith5981BE0331206F430
Verified (Factored)1999-03-01Daniel Meindorfer5981BE0331206F43420441
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-10-04Oliver Kruse7B3AE4EC68F587721013
Verified (Factored)2017-11-06kkmrkkblmbrbk7B3AE4EC68F58772186987113
Verified2021-03-02-Anonymous-18059E0D91FD20BF230811853
Verified2021-03-15Anton Repko18059E0D91FD20BF27667053
History
DateUserTypeResult
2022-04-03JossNF-PM1
B1=1000000, B2=188329050
2021-04-15HaiyungCERT
PRP Certification
Proof certified good
2021-03-15Ben DeloCERT
PRP Certification
Proof certified good
2021-03-15Anton RepkoC-PRP
M1842497/86356783625647324146871/18626020385970676257084409 : 18059E0D91FD20BF
PRP proof power = 7
PRP: Verified
Proof certified good
2021-03-02-Anonymous-C-PRP
M1842497/86356783625647324146871/18626020385970676257084409 : 18059E0D91FD20BF
PRP proof power = 7
PRP: Verified
Proof certified good
2021-03-01Chang Chia-TcheF-ECM
Factor: 18626020385970676257084409 / (ECM curve 5, B1=50000, B2=5000000, Sigma=669251818861516)
2017-11-06kkmrkkblmbrbkC-PRP
M1842497/86356783625647324146871 : 7B3AE4EC68F58772
PRP: Verified (Factored)
PRP without proof (not generated)
2017-10-04Oliver KruseC-PRP
M1842497/86356783625647324146871 : 7B3AE4EC68F58772
PRP: Verified (Factored)
PRP without proof (not generated)
2011-02-07Carsten KossendeyF-PM1
Factor: 86356783625647324146871
2011-01-21GrunwalderGIMPNF
no factor from 2^1 to 2^63
2010-04-09Architects CubedNF
no factor from 2^60 to 2^61