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
8879293Factored
FactorDigitsBitsDate
50994862427838411172711063748653752754339128.62022-06-19 18:55:46
382882775525172070347920689809691895799535143141.52022-06-19 18:55:46
ECM
DigitsB1Curves
25500003 / 280
Estimated T-Level: 20.1 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Bad2000-01-12Pedro Soares339EF22F9CBF719D7174456
Verified (Factored)2003-10-08Ars Technica Team Prime Rib20212747FFB8DBD73693477
Verified (Factored)2004-02-07Cyrille Chevallet20212747FFB8DBD71898788
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2022-06-26Poao9009E32FD43225FE2372873553
P-1 factors
DateFactorB1B2
2022-06-19195250544638950855997339080950141278606206258540480892366396221045768894722845259330000004360125000
History
DateUserTypeResult
2022-06-26WeakForceBosonCERT
PRP Certification
Proof certified good
2022-06-26PoaoC-PRP
M8879293/509948624278384111727110637486537527543/3828827755251720703479206898096918957995351 : 9009E32FD43225FE
PRP proof power = 8
PRP: Verified
Proof certified good
2022-06-19linamentF-PM1
Factor: 1952505446389508559973390809501412786062062585404808923663962210457688947228452593 / (P-1, B1=3000000, B2=4360125000)
2022-06-19linamentNF-PM1
B1=2999900
2021-11-24mikrNF
no factor from 2^70 to 2^71
2020-10-02-Anonymous-NF
no factor from 2^69 to 2^70
2020-05-08TJAOINF
no factor from 2^68 to 2^69
2018-04-16monstNF
no factor from 2^67 to 2^68
2016-03-08snme2pm1NF
no factor from 2^66 to 2^67
2015-05-25VictordeHollanderNF
no factor from 2^65 to 2^66
2014-01-12lycornNF
no factor from 2^64 to 2^65
2012-10-26NesowaNF-PM1
B1=105000, B2=1942500, E=6