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

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MnStatusDetails
2136593Factored
FactorDigitsBitsDate
550492609355066684133612375.52020-07-22 09:45:33
ECM
DigitsB1Curves
2550000104 / 280
Estimated T-Level: 21.9 ⓘ
TF below 2^68 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Suhas DaftuarBC1589FE361EDC250
Verified (Factored)1999-01-29David PhillipsBC1589FE361EDC25864957
Verified (Factored)2018-04-06kkmrkkblmbrbkBC1589FE361EDC25863600
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2020-07-23argusdusty86F04E9D15BFD7311108504753
Verified2020-07-28Yves Bellefeuille86F04E9D15BFD7311125398853
History
DateUserTypeResult
2020-07-28Yves BellefeuilleC-PRP
M2136593/55049260935506668413361 : 86F04E9D15BFD731
PRP: Verified
PRP without proof (not generated)
2020-07-23argusdustyC-PRP
M2136593/55049260935506668413361 : 86F04E9D15BFD731
PRP: Verified
PRP without proof (not generated)
2020-07-22GANF-ECM
Factor: 55049260935506668413361 / (ECM curve 3, B1=50000, B2=5000000, Sigma=634477302076011)
2019-04-22TJAOINF
no factor from 2^67 to 2^68
2018-04-06kkmrkkblmbrbkC-LL
BC1589FE361EDC25
2017-10-12mikrNF-PM1
B1=2500000, B2=125000000, E=12
2016-10-29Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^58 to 2^60
2015-12-27ramgeisNF
no factor from 2^65 to 2^66
2015-03-18VictordeHollanderNF
no factor from 2^64 to 2^65
2015-03-18VictordeHollanderNF
no factor from 2^63 to 2^64
2013-11-15c10ck3rNF-PM1
B1=500000, B2=10000000, E=12
2013-02-21dbaughNF
no factor from 2^62 to 2^63
2012-04-15Sebastian HornbostelNF
no factor from 2^61 to 2^62
2010-11-26Oscar ÖstlinNF-PM1
B1=80000, B2=1500000, E=6
2010-10-26Oscar ÖstlinNF-PM1
B1=75011
2009-01-04Sturle SundeNF
no factor from 2^60 to 2^61