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

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MnStatusDetails
2445829Factored
FactorDigitsBitsDate
69868144070804542601032272.62021-01-05 21:00:56
ECM
DigitsB1Curves
2550000106 / 280
Estimated T-Level: 21.9
TF below 2^68 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Zyg Furmaniuk9C5892F5FD72D7550
Verified (Factored)1999-09-07Keith O'Dell9C5892F5FD72D7551466784
Verified (Factored)2018-05-25kkmrkkblmbrbk9C5892F5FD72D7552115524
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2021-01-05riccardo uberti8DB791E496E01E7B1165828253
History
DateUserTypeResult
2021-01-05Simon JosefssonCERT
PRP Certification
Proof certified good
2021-01-05riccardo ubertiC-PRP
M2445829/6986814407080454260103 : 8DB791E496E01E7B
PRP proof power = 7
PRP: Verified
Proof certified good
2021-01-05ZenzomaF-ECM
Factor: 6986814407080454260103 / (ECM curve 6, B1=50000, B2=5000000, Sigma=4274600806914414)
2019-04-01Sid & AndyNF-PM1
B1=6000000, B2=180000000, E=12
2019-03-25TJAOINF
no factor from 2^67 to 2^68
2018-05-25kkmrkkblmbrbkC-LL
9C5892F5FD72D755
2017-07-12Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^59 to 2^60
2015-10-25ramgeisNF
no factor from 2^65 to 2^66
2015-02-27VictordeHollanderNF
no factor from 2^64 to 2^65
2015-02-27VictordeHollanderNF
no factor from 2^63 to 2^64
2014-01-24mikrNF-PM1
B1=1172000, B2=48000000, E=12
2013-12-04Jerry HallettNF
no factor from 2^62 to 2^63
2011-10-04Sebastian HornbostelNF
no factor from 2^61 to 2^62
2011-01-18Oscar ÖstlinNF-PM1
B1=95000, B2=1947500, E=6
2010-11-19JossNF-PM1
B1=20000
2009-01-14Sturle SundeNF
no factor from 2^60 to 2^61