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
5035747Factored
FactorDigitsBitsDate
279373792694278114999764492684.52021-10-27 14:26:39
ECM
DigitsB1Curves
255000044 / 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)1998-07-11Jim Phillips3201FFC2A70940520
Verified (Factored)2000-04-19Jerry Harris3201FFC2A70940523435810
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2021-10-27ATH0FF1C34B2A1435481137409253
History
DateUserTypeResult
2021-10-27Ron LeShaneCERT
PRP Certification
Proof certified good
2021-10-27ATHC-PRP
M5035747/27937379269427811499976449 : 0FF1C34B2A143548
PRP proof power = 7
PRP: Verified
Proof certified good
2021-10-27ATHF-PP1
Start=2/7, B1=2500000, B2=87500000, Factor: 27937379269427811499976449
2021-04-04-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
2021-01-18TJAOINF
no factor from 2^68 to 2^69
2018-06-11ramgeisNF
no factor from 2^67 to 2^68
2017-03-01Squeeky_SquirrelNF-PM1
B1=300000, B2=9375000, E=12
2016-05-17Gordon 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=67746
2009-07-21USAFSSNF-PM1
B1=55000, B2=907500, E=6