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

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MnStatusDetails
8605237Factored
FactorDigitsBitsDate
2367796879099409114301658348273732104.22021-11-25 01:23:43
ECM
DigitsB1Curves
255000010 / 280
Estimated T-Level: 20.2
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)1999-12-30Tom Steemson37C7BD9A2B3233300
Verified (Factored)2003-05-11John Scali37C7BD9A2B3233302039613
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2021-11-30Joe S.432C211374E2C4CC1386880953
History
DateUserTypeResult
2021-11-30bernardo_sCERT
PRP Certification
Proof certified good
2021-11-30Joe S.C-PRP
M8605237/23677968790994091143016583482737 : 432C211374E2C4CC
PRP proof power = 8
PRP: Verified
Proof certified good
2021-11-25masserF-PP1
Start=2/7, B1=375000, B2=8625000, Factor: 23677968790994091143016583482737
2021-10-15SRBaseNF
no factor from 2^71 to 2^72
2021-10-09Sid & AndyNF
no factor from 2^70 to 2^71
2021-08-22SRBaseNF
no factor from 2^69 to 2^70
2019-11-09masserNF
no factor from 2^68 to 2^69
2018-04-25monstNF
no factor from 2^67 to 2^68
2016-02-01snme2pm1NF
no factor from 2^66 to 2^67
2015-05-25VictordeHollanderNF
no factor from 2^65 to 2^66
2013-11-04David CampeauNF
no factor from 2^64 to 2^65
2012-02-10bcp19NF-PM1
B1=100000, B2=1825000, E=6