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

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Exponent Range:










MnStatusDetails
3047557Factored
FactorDigitsBitsDate
33588328322114501044312271.52021-06-20 07:28:30
ECM
DigitsB1Curves
255000070 / 280
Estimated T-Level: 21.3
TF below 2^66 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Rhoads Hollowell6857CEF12EFC7B960
Verified (Factored)Steve Potocny6857CEF12EFC7B960
Verified (Factored)2015-11-14MadPoo6857CEF12EFC7B961229130
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2021-06-21kutensD6A956209CBCB0A61192468853
History
DateUserTypeResult
2022-02-05JossNF-PM1
B1=1000000, B2=119912100
2022-01-20JossNF
no factor from 2^67 to 2^68
2021-06-21MattCERT
PRP Certification
Proof certified good
2021-06-21kutensC-PRP
M3047557/3358832832211450104431 : D6A956209CBCB0A6
PRP proof power = 7
PRP: Verified
Proof certified good
2021-06-20daveward2005F-ECM
Factor: 3358832832211450104431 / (ECM curve 6, B1=50000, B2=5000000, Sigma=6829895855601808)
2021-05-05oodairaNF-PM1
B1=32538852, B2=1854714564, E=12
2021-03-25TJAOINF
no factor from 2^68 to 2^69
2018-07-24ramgeisNF
no factor from 2^67 to 2^68
2017-09-14mikrNF-PM1
B1=3000000, B2=100000000, E=12
2017-05-06Gordon SpenceNF
no factor from 2^66 to 2^67
2016-03-13Squeeky_SquirrelNF-PM1
B1=205000, B2=5688750, E=12
2016-02-23Mark RoseNF
no factor from 2^1 to 2^60
2015-11-14MadPooC-LL
6857CEF12EFC7B96
2015-06-06ThaNF
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
2013-01-07dbaughNF
no factor from 2^62 to 2^63
2010-11-11Sid & AndyNF
no factor from 2^61 to 2^62
2010-10-03markrNF-PM1
B1=110000, B2=2420000, E=6
2009-02-13Sturle SundeNF
no factor from 2^60 to 2^61