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
5527007Factored
FactorDigitsBitsDate
18310977264608653148111852027156385867040742137.12021-10-30 06:02:31
ECM
DigitsB1Curves
25500009 / 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)nmainerC8B106BB8AD54FD70
Verified (Factored)Peter StoneC8B106BB8AD54FD70
Verified (Factored)2000-11-05Liu BinC8B106BB8AD54FD71200670
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2021-11-04ATHFA6A7CAA9E6262661325645653
P-1 factors
DateFactorB1B2
2021-10-301831097726460865314811185202715638586704078000000400000000
History
DateUserTypeResult
2021-11-04KrieselCERT
PRP Certification
Proof certified good
2021-11-04ATHC-PRP
M5527007/183109772646086531481118520271563858670407 : FA6A7CAA9E626266
PRP proof power = 7
PRP: Verified
Proof certified good
2021-10-30axnF-PM1
Factor: 183109772646086531481118520271563858670407 / (P-1, B1=8000000, B2=400000000)
2021-10-11SRBaseNF
no factor from 2^71 to 2^72
2021-08-24SRBaseNF
no factor from 2^70 to 2^71
2021-08-18SRBaseNF
no factor from 2^69 to 2^70
2020-08-24TJAOINF
no factor from 2^68 to 2^69
2019-09-09GdSNF-PM1
B1=200000, B2=6000000, E=12
2018-07-05ramgeisNF
no factor from 2^67 to 2^68
2016-07-22Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^1 to 2^62
2015-08-31snme2pm1NF
no factor from 2^65 to 2^66
2014-12-08monstNF
no factor from 2^64 to 2^65
2014-12-07NesowaNF
no factor from 2^63 to 2^64
2009-05-24Rob_DeeNF-PM1
B1=65000, B2=1121250, E=6
2009-04-28GrunwalderGIMPNF
no factor from 2^62 to 2^63