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

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MnStatusDetails
1116943Factored
FactorDigitsBitsDate
371438716872405285511132375.02017-06-16 12:34:01
46624591984965575338126681032891.92015-03-12 10:04:48
973529455843967266273854176812996.32015-03-12 10:04:48
ECM
DigitsB1Curves
2550000280 / 280
30250000100 / 640
Estimated T-Level: 25.8 ⓘ
TF below 2^81 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Tom Ricket757A966B079FFB6D0
Verified (Factored)Cornelius Caesar757A966B079FFB6D0
Verified (Factored)2004-03-01Brian J. Beesley757A966B079FFB6D520804
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-09-30alpertronA65CD5D054B3D9DA3013
Verified2017-10-16Oliver KruseA65CD5D054B3D9DA310484213
P-1 factors
DateFactorB1B2
2015-03-124539041366407053419137315748347541073095388362096809291435000000200000000
History
DateUserTypeResult
2022-03-07LordJuliusNF
no factor from 2^58 to 2^60
2017-10-16Oliver KruseC-PRP
M1116943/4662459198496557533812668103/97352945584396726627385417681/37143871687240528551113 : A65CD5D054B3D9DA
PRP: Verified
PRP without proof (not generated)
2017-09-30alpertronC-PRP
M1116943/37143871687240528551113/4662459198496557533812668103/97352945584396726627385417681 : A65CD5D054B3D9DA
PRP: Verified
PRP without proof (not generated)
2017-09-29Oliver KruseC-PRP
M1116943/4662459198496557533812668103/97352945584396726627385417681/37143871687240528551113 : A65CD5D054B3D9DA
PRP without proof (not generated)
2017-06-16TJAOIF-ECM
Factor: 37143871687240528551113 / (ECM curve 82, B1=50000, B2=5000000)
2015-03-12mikrF-PM1
Factor: 453904136640705341913731574834754107309538836209680929143 / (P-1, B1=5000000, B2=200000000, E=12)
2014-12-31lycornNF
no factor from 2^64 to 2^65
2014-12-22Matthias WurtingerNF
no factor from 2^63 to 2^64
2012-10-27kurlyNF-PM1
B1=500000, B2=10000000, E=12
2012-10-13dbaughNF
no factor from 2^62 to 2^63
2011-05-09XyzzyNF
no factor from 2^61 to 2^62
2009-02-14Sturle SundeNF
no factor from 2^60 to 2^61