Marin Mersenne 2^P-1
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MnStatusDetails
2998007Factored
FactorDigitsBitsDate
2972034094833572029238572572787.92020-12-24 18:10:05
ECM
DigitsB1Curves
255000040 / 280
Estimated T-Level: 20.7
TF below 2^64 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Roger SmithB745F572BA2153200
Bad1999-07-12Robbie Offutt26EC700A04CC85421469880
Verified (Factored)1999-11-24Eric HaywardB745F572BA2153202768151
Verified (Factored)2018-10-24kkmrkkblmbrbkB745F572BA215320418749
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2020-12-27Niels_Mache_Nextcloud72855E474D561BFD150123753
History
DateUserTypeResult
2020-12-27curtiscCERT
PRP Certification
Proof certified good
2020-12-27Niels_Mache_NextcloudC-PRP
M2998007/297203409483357202923857257 : 72855E474D561BFD
PRP proof power = 7
PRP: Verified
Proof certified good
2020-12-24ZenzomaF-ECM
Factor: 297203409483357202923857257 / (ECM curve 4, B1=50000, B2=5000000, Sigma=5967539265303412)
2019-11-29BigBrotherNF-PM1
B1=3000000, B2=90000000, E=12
2018-12-30chuenkitNF
no factor from 2^67 to 2^68
2018-10-24kkmrkkblmbrbkC-LL
B745F572BA215320
2017-12-07Gordon SpenceNF
no factor from 2^66 to 2^67
2017-04-12JossNF-PM1
B1=644971, B2=6449710, E=12
2017-04-07JossNF-PM1
B1=537476, B2=5374760, E=6
2017-04-04JossNF-PM1
B1=447897, B2=4478970, E=6
2017-04-01JossNF-PM1
B1=373248, B2=3732480, E=6
2017-03-02JossNF-PM1
B1=311040, B2=3110400, E=6
2016-12-23JossNF-PM1
B1=216000
2016-12-16JossNF-PM1
B1=180000
2016-10-07JossNF-PM1
B1=150000, B2=15000000, E=12
2016-09-21JossNF-PM1
B1=150000, B2=2894925
2016-09-12JossNF-PM1
B1=150000, B2=2631750, E=6
2016-02-24ramgeisNF
no factor from 2^65 to 2^66
2015-02-01lycornNF
no factor from 2^64 to 2^65
2015-02-01lycornNF
no factor from 2^63 to 2^64
2013-01-07dbaughNF
no factor from 2^62 to 2^63
2011-11-25Grant McCrackenNF
no factor from 2^61 to 2^62
2010-10-20markrNF-PM1
B1=110000, B2=2392500, E=6
2009-02-13Sturle SundeNF
no factor from 2^60 to 2^61