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
285839Factored
FactorDigitsBitsDate
571679619.1old
20580409824.32008-07-21 09:15:55
445428630491135.42008-07-21 09:15:55
5681014813470584911408632478.92015-10-23 13:45:28
873574984810570882413581992686.22020-11-14 08:55:39
ECM
DigitsB1Curves
2550000280 / 280
30250000499 / 640
Estimated T-Level: 28.9 ⓘ
TF below 2^91 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified (Factored)2017-09-24Oliver Kruse915DDEC0C441CBFA4013
Verified (Factored)2017-09-30alpertron915DDEC0C441CBFA4013
Verified (Factored)2017-12-07ATH915DDEC0C441CBFA49375113
Verified (Factored)2020-04-17Oliver Kruse77DB64D7BD60157A423733753
Verified2020-11-14Jinyuan Wang77DB64D7BD60157A58129453
Verified2020-11-15Joe S.77DB64D7BD60157A54346053
Verified (Factored)2022-05-12Jorge Coveiro77DB64D7BD60157A124838953
History
DateUserTypeResult
2023-02-05Kevin_9611NF-PM1
B1=5000000, B2=21185950500
2023-02-04Kevin_9611NF-PM1
B1=1500000, B2=10592975250
2022-05-12Jorge CoveiroC-PRP
M285839/571679 : 77DB64D7BD60157A
PRP proof power = 5
PRP: Verified (Factored)
PRP proof never uploaded
2022-02-06Lisander ViaeneNF-PM1
B1=50000
2020-11-15Ben DeloCERT
PRP Certification
Proof certified good
2020-11-15Joe S.C-PRP
M285839/571679/20580409/44542863049/568101481347058491140863/87357498481057088241358199 : 77DB64D7BD60157A
PRP proof power = 5
PRP: Verified
Proof certified good
2020-11-14Jinyuan WangC-PRP
M285839/571679/20580409/44542863049/568101481347058491140863/87357498481057088241358199 : 77DB64D7BD60157A
PRP proof power = 5
PRP: Verified
PRP proof never uploaded
2020-11-14KALEIDOSCOREF-ECM
Factor: 87357498481057088241358199 / (ECM curve 5, B1=250000, B2=25000000, Sigma=3491335503187231)
2020-04-17Oliver KruseC-PRP
M285839/571679/20580409/44542863049/568101481347058491140863 : 77DB64D7BD60157A
PRP: Verified (Factored)
PRP without proof (small exponent)
2017-12-07ATHC-PRP
M285839/571679/20580409/44542863049/568101481347058491140863 : 915DDEC0C441CBFA
PRP: Verified (Factored)
PRP without proof (small exponent)
2017-09-30alpertronC-PRP
M285839/20580409/44542863049/568101481347058491140863/571679 : 915DDEC0C441CBFA
PRP: Verified (Factored)
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M285839/571679/20580409/44542863049/568101481347058491140863 : 915DDEC0C441CBFA
PRP without proof (not generated)
2015-10-23TJAOIF-ECM
Factor: 568101481347058491140863 / (ECM curve 27, B1=50000, B2=5000000)
2008-07-21J FeitsmaF
Factor: 44542863049
2008-07-21J FeitsmaF
Factor: 20580409