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

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MnStatusDetails
3433453Factored
FactorDigitsBitsDate
14224884845699349401832270.32021-03-23 21:29:53
ECM
DigitsB1Curves
255000019 / 280
Estimated T-Level: 20.3
TF below 2^63 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)1998-10-04Geoff Wing469AE5AB1628CFA50
Verified (Factored)1999-07-04Dave Wells469AE5AB1628CFA52781130
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2021-03-25Hyeonseung Kwon4B26F50B6D8291EB1340269653
History
DateUserTypeResult
2022-02-12JossNF-PM1
B1=1000000, B2=114656850
2022-01-22JossNF
no factor from 2^67 to 2^68
2021-03-25Ben DeloCERT
PRP Certification
Proof certified good
2021-03-25Hyeonseung KwonC-PRP
M3433453/1422488484569934940183 : 4B26F50B6D8291EB
PRP proof power = 7
PRP: Verified
Proof certified good
2021-03-23mnd9F-ECM
Factor: 1422488484569934940183 / (ECM curve 4, B1=50000, B2=5000000, Sigma=5401518195086842)
2021-01-01axnNF
no factor from 2^68 to 2^69
2018-09-24TJAOINF
no factor from 2^67 to 2^68
2017-02-05Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^1 to 2^60
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2015-04-13Gordon SpenceNF
no factor from 2^65 to 2^66
2015-02-07VictordeHollanderNF
no factor from 2^64 to 2^65
2015-02-07VictordeHollanderNF
no factor from 2^63 to 2^64
2014-09-15HBendtzNF-PM1
B1=500000, B2=10000000, E=12
2012-08-18GrunwalderGIMPNF
no factor from 2^1 to 2^63
2011-08-08markrNF
no factor from 2^61 to 2^62
2010-09-27Rob_DeeNF-PM1
B1=100000, B2=1000000
2010-09-26Rob_DeeNF-PM1
B1=100000, B2=800000
2010-09-26Rob_DeeNF-PM1
B1=100000, B2=600000
2010-09-26Rob_DeeNF-PM1
B1=100000, B2=400000
2010-09-25Rob_DeeNF-PM1
B1=100000, B2=200000
2010-09-25Rob_DeeNF-PM1
B1=90000, B2=100000
2010-09-24Rob_DeeNF-PM1
B1=80000, B2=90000
2010-09-24Rob_DeeNF-PM1
B1=70000, B2=80000
2010-09-24Rob_DeeNF-PM1
B1=60000, B2=70000
2010-09-24Rob_DeeNF-PM1
B1=50000, B2=60000
2010-09-24Rob_DeeNF-PM1
B1=40000, B2=50000
2010-09-23Rob_DeeNF-PM1
B1=30000, B2=40000
2010-09-23Rob_DeeNF-PM1
B1=20000, B2=30000
2010-09-23Rob_DeeNF-PM1
B1=10000, B2=20000
2009-03-24S485122NF
no factor from 2^60 to 2^61