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

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Exponent Range:










MnStatusDetails
23517601Factored
FactorDigitsBitsDate
2737135000118023411541771832787.82021-05-07 04:37:17
28734458329471397726908658692495133107.82021-05-07 04:37:17
ECM
DigitsB1Curves
25500007 / 280
Estimated T-Level: 20.1
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)2004-12-13paul jones4B6CEAEA782757FB11348755
Verified (Factored)2010-08-05gkramer4B6CEAEA782757FB261560
P-1 factors
DateFactorB1B2
2021-05-0778650091603029033018091227770166444001988216065464577593033120000079200000
History
DateUserTypeResult
2021-05-13firejugglerNF-PP1
Start=6/5, B1=500000, B2=23500000
2021-05-07firejugglerF-PM1
Factor: 78650091603029033018091227770166444001988216065464577593033 / (P-1, B1=1200000, B2=79200000)
2018-08-26ramgeisNF
no factor from 2^69 to 2^70
2018-01-05VictordeHollanderNF
no factor from 2^68 to 2^69
2016-06-09VictordeHollanderNF
no factor from 2^67 to 2^68
2010-08-05gkramerC-LL
4B6CEAEA782757FB