Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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Exponent Range:










MnStatusDetails
1541513Factored
FactorDigitsBitsDate
1011955932009298677532166.52013-09-13 01:34:30
ECM
DigitsB1Curves
2550000280 / 280
30250000107 / 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)Lee Middle School469984A011AB66340
Verified (Factored)1999-01-10Kai-ming Poon469984A011AB66341409685
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-10-01Oliver Kruse3F47767AB8A2463B1013
Verified2017-11-10kkmrkkblmbrbk3F47767AB8A2463B184531113
History
DateUserTypeResult
2017-11-10kkmrkkblmbrbkC-PRP
M1541513/101195593200929867753 : 3F47767AB8A2463B
PRP: Verified
PRP without proof (not generated)
2017-10-01Oliver KruseC-PRP
M1541513/101195593200929867753 : 3F47767AB8A2463B
PRP: Verified
PRP without proof (not generated)
2016-03-17alpertronNF-PM1
B1=500000, B2=15000000, E=12
2013-09-13Chang Chia-TcheF-ECM
Factor: 101195593200929867753
2011-02-02James HeinrichNF-PM1
B1=80000, B2=1340000, E=6
2010-05-17GrunwalderGIMPNF
no factor from 2^1 to 2^63
2010-04-27Architects CubedNF
no factor from 2^60 to 2^61