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
88019Factored
FactorDigitsBitsDate
15375232404744907290351263520818843915339126.92022-06-25 03:22:33
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000001503 / 4588
Estimated T-Level: 36.6
TF below 2^117 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Unknown73140
Verified (Factored)Charles F. Kerchner III1E48BE429A1FF3140
Verified (Factored)Brian J. Beesley1E48BE429A1FF3140
Verified (Factored)2015-04-11MadPoo1E48BE429A1FF31454249
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2022-06-25George Woltman53116DF88E8AF8901904253
Verified2022-06-25LordJulius53116DF88E8AF89014598953
P-1 factors
DateFactorB1B2
2022-06-2515375232404744907290351263520818843915310000000001289222044110
History
DateUserTypeResult
2024-01-17masserNF-PP1
Start=2/7, B1=13000000, B2=689000000
2023-06-01JacobZNF-PM1
B1=1300000000, B2=1230112483970370
2022-06-25LordJuliusC-PRP
M88019/153752324047449072903512635208188439153 : 53116DF88E8AF890
PRP: Verified
PRP without proof (small exponent)
2022-06-25George WoltmanC-PRP
M88019/153752324047449072903512635208188439153 : 53116DF88E8AF890
PRP: Verified
PRP without proof (small exponent)
2022-06-25George WoltmanF-PM1
Factor: 153752324047449072903512635208188439153 / (P-1, B1=1000000000, B2=1289222044110)
2020-07-14YxinityNF
no factor from 2^65 to 2^66
2020-07-05YxinityNF
no factor from 2^65 to 2^66
2020-07-02YxinityNF
no factor from 2^65 to 2^66
2018-11-16YxinityNF
no factor from 2^64 to 2^65
2018-11-15YxinityNF
no factor from 2^64 to 2^65
2017-03-07snme2pm1NF
no factor from 2^63 to 2^64
2016-02-23LaurVNF
no factor from 2^57 to 2^58
2016-02-23LaurVNF
no factor from 2^58 to 2^59
2016-02-18snme2pm1NF
no factor from 2^62 to 2^63
2015-04-11MadPooC-LL
1E48BE429A1FF314
2014-08-06Sid & AndyNF
no factor from 2^61 to 2^62
2013-10-22lycornNF
no factor from 2^60 to 2^61
2012-08-22LaurVNF-PM1
B1=100000000, B2=2000000000, E=12
2009-01-05Sturle SundeNF
no factor from 2^59 to 2^60