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

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MnStatusDetails
1187803Factored
FactorDigitsBitsDate
11290506950091260393772269.92016-09-15 20:08:50
18015386430342496999955842482702432405049742137.02016-07-29 05:31:52
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
403000000548 / 4588
Estimated T-Level: 35.6
TF below 2^113 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Cornelius Caesar89F094002DF823830
Verified (Factored)Martin Fahlgren89F094002DF823830
Verified (Factored)Ricardo Montiel89F094002DF823830
Verified (Factored)2015-11-11MadPoo89F094002DF82383392821
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-05Oliver Kruse949C59E8AB1A25BA2013
Verified2017-10-17Oliver Kruse949C59E8AB1A25BA291350113
Verified2018-01-03ATH949C59E8AB1A25BA268128713
P-1 factors
DateFactorB1B2
2016-07-2918015386430342496999955842482702432405049725000000
History
DateUserTypeResult
2021-01-15Bruno VictalNF-PM1
B1=850000000, B2=85000000000, E=12
2018-01-03ATHC-PRP
M1187803/1129050695009126039377/180153864303424969999558424827024324050497 : 949C59E8AB1A25BA
PRP: Verified
PRP without proof (not generated)
2017-10-17Oliver KruseC-PRP
M1187803/180153864303424969999558424827024324050497/1129050695009126039377 : 949C59E8AB1A25BA
PRP: Verified
PRP without proof (not generated)
2017-10-05Oliver KruseC-PRP
M1187803/180153864303424969999558424827024324050497/1129050695009126039377 : 949C59E8AB1A25BA
PRP: Verified
PRP without proof (not generated)
2017-09-29Oliver KruseC-PRP
M1187803/180153864303424969999558424827024324050497/1129050695009126039377 : 949C59E8AB1A25BA
PRP without proof (not generated)
2016-11-14Bruno VictalNF-PM1
B1=10000000, B2=264201805830
2016-11-09Bruno VictalNF-PM1
B1=10000000, B2=128970154188
2016-11-08Bruno VictalNF-PM1
B1=10000000, B2=77737104492
2016-09-15Bruno VictalF-ECM
Factor: 1129050695009126039377 / (ECM curve 6, B1=50000, B2=5000000)
2016-07-29Bruno VictalF-PM1
Factor: 180153864303424969999558424827024324050497 / (P-1, B1=2500000)
2016-02-23Mark RoseNF
no factor from 2^58 to 2^60
2015-11-11MadPooC-LL
89F094002DF82383
2015-09-30ramgeisNF
no factor from 2^65 to 2^66
2015-01-05lycornNF
no factor from 2^64 to 2^65
2015-01-03Matthias WurtingerNF
no factor from 2^63 to 2^64
2013-10-01David CampeauNF-PM1
B1=1210000, B2=35090000, E=12
2012-11-24dbaughNF
no factor from 2^62 to 2^63
2012-09-08AxelssonNF
no factor from 2^61 to 2^62
2009-03-30Sturle SundeNF
no factor from 2^60 to 2^61