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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MnStatusDetails
1616453Factored
FactorDigitsBitsDate
65098828910758590861427612582.42017-10-01 16:48:25
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)1997-11-29Marco Voerman327F803611617C280
Verified (Factored)1998-11-14Mischa Kenn327F803611617C28138206
Verified (Factored)2015-07-03MadPoo327F803611617C281014872
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-10-02Oliver Kruse4EE0D579CB5FBA621013
Verified2017-11-01kkmrkkblmbrbk4EE0D579CB5FBA62162614813
History
DateUserTypeResult
2017-11-01kkmrkkblmbrbkC-PRP
M1616453/6509882891075859086142761 : 4EE0D579CB5FBA62
PRP: Verified
PRP without proof (not generated)
2017-10-02Oliver KruseC-PRP
M1616453/6509882891075859086142761 : 4EE0D579CB5FBA62
PRP: Verified
PRP without proof (not generated)
2017-10-01VictordeHollanderF-ECM
Factor: 6509882891075859086142761 / (ECM curve 134, B1=50000, B2=5000000)
2017-08-07JossNF-PM1
B1=2000000, B2=20000000, E=12
2017-07-18JossNF-PM1
B1=1200000, B2=12000000, E=12
2016-02-23Mark RoseNF
no factor from 2^61 to 2^62
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2016-02-23Mark RoseNF
no factor from 2^58 to 2^60
2015-10-11ramgeisNF
no factor from 2^65 to 2^66
2015-07-03MadPooC-LL
327F803611617C28
2015-04-28monstNF
no factor from 2^64 to 2^65
2015-04-27omylistNF
no factor from 2^63 to 2^64
2011-11-25BigBrotherNF-PM1
B1=1000000, B2=20000000, E=12
2010-07-24GrunwalderGIMPNF
no factor from 2^1 to 2^63
2010-05-01Architects CubedNF
no factor from 2^60 to 2^61