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

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MnStatusDetails
2262209Factored
FactorDigitsBitsDate
3475824469516959135869992478.22020-02-24 23:46:32
ECM
DigitsB1Curves
255000095 / 280
Estimated T-Level: 21.7
TF below 2^67 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
BadJason MayfieldDD0A46347EDA5E870
Verified (Factored)1999-03-26Laremy CowartD328A7F70E39CD231432769
Verified (Factored)1999-05-16Andrew Haveland-RobinsonD328A7F70E39CD23292981
Verified (Factored)2018-04-24kkmrkkblmbrbkD328A7F70E39CD231579236
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2020-02-26Christoph Zenger28469017034375631192727953
Verified2020-02-27Jinyuan Wang2846901703437563121667553
Verified2020-02-28Luigi Morelli2846901703437563114931453
History
DateUserTypeResult
2020-02-28Luigi MorelliC-PRP
M2262209/347582446951695913586999 : 2846901703437563
PRP: Verified
PRP without proof (not generated)
2020-02-27Jinyuan WangC-PRP
M2262209/347582446951695913586999 : 2846901703437563
PRP: Verified
PRP without proof (not generated)
2020-02-26Christoph ZengerC-PRP
M2262209/347582446951695913586999 : 2846901703437563
PRP: Verified
PRP without proof (not generated)
2020-02-24mnd9F-ECM
Factor: 347582446951695913586999 / (ECM curve 1, B1=50000, B2=5000000, Sigma=577638390839093)
2019-06-28BigBrotherNF-PM1
B1=1000000, B2=20000000, E=12
2019-05-06TJAOINF
no factor from 2^67 to 2^68
2018-04-24kkmrkkblmbrbkC-LL
D328A7F70E39CD23
2017-01-15Gordon SpenceNF
no factor from 2^66 to 2^67
2016-03-27JossNF-PM1
B1=342144, B2=3421440, E=6
2016-02-23Mark RoseNF
no factor from 2^1 to 2^60
2015-10-30ramgeisNF
no factor from 2^65 to 2^66
2015-03-10VictordeHollanderNF
no factor from 2^64 to 2^65
2015-03-10VictordeHollanderNF
no factor from 2^63 to 2^64
2014-09-02JossNF-PM1
B1=128372
2013-12-04LaurVNF
no factor from 2^62 to 2^63
2012-05-05Sebastian HornbostelNF
no factor from 2^61 to 2^62
2011-01-04markrNF-PM1
B1=100000, B2=2075000, E=6
2010-11-12JossNF-PM1
B1=30000
2010-11-07JossNF-PM1
B1=15000
2009-01-11Sturle SundeNF
no factor from 2^60 to 2^61