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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
5037647Factored
FactorDigitsBitsDate
29117751739195678760472892581.32021-10-28 20:29:55
ECM
DigitsB1Curves
255000045 / 280
Estimated T-Level: 20.8 ⓘ
TF below 2^64 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)1998-06-01James Griffin7161F579E3C727870
Verified (Factored)2001-05-20Marc Getty / Phil Fizur7161F579E3C727874013289
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2021-10-29ATH010230FB910128A11275106353
History
DateUserTypeResult
2021-10-29JuanTutorsCERT
PRP Certification
Proof certified good
2021-10-29ATHC-PRP
M5037647/2911775173919567876047289 : 010230FB910128A1
PRP proof power = 7
PRP: Verified
Proof certified good
2021-10-28ATHF-PP1
Start=2/7, B1=2500000, B2=90000000, Factor: 2911775173919567876047289
2021-04-05-Anonymous-NF
no factor from 2^72 to 2^73
2021-04-02-Anonymous-NF
no factor from 2^71 to 2^72
2021-04-01-Anonymous-NF
no factor from 2^70 to 2^71
2021-04-01-Anonymous-NF
no factor from 2^69 to 2^70
2021-01-11TJAOINF
no factor from 2^68 to 2^69
2018-06-11ramgeisNF
no factor from 2^67 to 2^68
2017-03-02Squeeky_SquirrelNF-PM1
B1=300000, B2=9375000, E=12
2016-05-18Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^61 to 2^63
2015-07-28snme2pm1NF
no factor from 2^65 to 2^66
2014-12-16VictordeHollanderNF
no factor from 2^64 to 2^65
2014-12-16VictordeHollanderNF
no factor from 2^63 to 2^64
2014-11-17JossNF-PM1
B1=67741
2009-08-08USAFSSNF-PM1
B1=55000, B2=907500, E=6