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

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MnStatusDetails
2203177Factored
FactorDigitsBitsDate
934438312688749252540632172686.32020-03-03 06:58:44
ECM
DigitsB1Curves
2550000116 / 280
Estimated T-Level: 22.1
TF below 2^68 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Chris Duncombe RaeF1973B4AD18A01680
Verified (Factored)1999-03-01Tim QuillF1973B4AD18A0168765002
Verified (Factored)2018-04-16kkmrkkblmbrbkF1973B4AD18A01681209259
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2020-03-04xyuzyz2F34C13E4AE1EA851135050253
Verified2020-03-04oodaira2F34C13E4AE1EA851173213153
History
DateUserTypeResult
2020-03-04oodairaC-PRP
M2203177/93443831268874925254063217 : 2F34C13E4AE1EA85
PRP: Verified
PRP without proof (not generated)
2020-03-04xyuzyzC-PRP
M2203177/93443831268874925254063217 : 2F34C13E4AE1EA85
PRP: Verified
PRP without proof (not generated)
2020-03-03mnd9F-ECM
Factor: 93443831268874925254063217 / (ECM curve 1, B1=50000, B2=5000000, Sigma=2088618946072742)
2019-12-04mikrNF-PM1
B1=5000000, B2=200000000, E=12
2019-05-13TJAOINF
no factor from 2^67 to 2^68
2018-04-16kkmrkkblmbrbkC-LL
F1973B4AD18A0168
2016-12-04Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^58 to 2^60
2015-12-22Alexander DubrovinNF-PM1
B1=2000000, B2=200000000, E=12
2015-12-19Alexander DubrovinNF-PM1
B1=2000000, B2=120000000, E=12
2015-12-12Alexander DubrovinNF-PM1
B1=2000000, B2=91000000, E=12
2015-11-21Alexander DubrovinNF-PM1
B1=1000000, B2=90000000, E=12
2015-11-21Alexander DubrovinNF-PM1
B1=1000000, B2=70000000, E=6
2015-11-21Alexander DubrovinNF-PM1
B1=1000000, B2=65000000, E=6
2015-11-21Alexander DubrovinNF-PM1
B1=1000000, B2=60000000, E=12
2015-11-21Alexander DubrovinNF-PM1
B1=1000000, B2=50000000, E=6
2015-11-19Alexander DubrovinNF-PM1
B1=1000000, B2=45000000, E=12
2015-11-19Alexander DubrovinNF-PM1
B1=1000000, B2=35000000, E=6
2015-11-19Alexander DubrovinNF-PM1
B1=1000000, B2=30000000, E=12
2015-11-19Alexander DubrovinNF-PM1
B1=1000000, B2=20000000, E=6
2015-11-17Alexander DubrovinNF-PM1
B1=1000000, B2=14000000, E=6
2015-11-17Alexander DubrovinNF-PM1
B1=1000000, B2=10000000, E=6
2015-11-15Alexander DubrovinNF-PM1
B1=1000000, B2=7000000, E=6
2015-11-14Alexander DubrovinNF-PM1
B1=1000000, B2=3000000, E=6
2015-11-05Alexander DubrovinNF-PM1
B1=500000, B2=1700000, E=6
2015-10-21ramgeisNF
no factor from 2^65 to 2^66
2015-03-03VictordeHollanderNF
no factor from 2^64 to 2^65
2015-03-03VictordeHollanderNF
no factor from 2^63 to 2^64
2014-10-17JossNF-PM1
B1=148266
2014-06-24JossNF-PM1
B1=119133
2013-12-04LaurVNF
no factor from 2^62 to 2^63
2011-01-10markrNF-PM1
B1=90000, B2=1642500, E=6
2010-11-09JossNF-PM1
B1=30000
2010-11-05JossNF-PM1
B1=15000
2009-01-07Sturle SundeNF
no factor from 2^61 to 2^62
2009-01-02Sturle SundeNF
no factor from 2^60 to 2^61