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
14018573Factored
FactorDigitsBitsDate
53188553953017212401612272.22020-09-26 17:26:34
6358073434889493426692390513263932105.62020-09-26 17:26:34
ECM
DigitsB1Curves
25500004 / 280
Estimated T-Level: 20.1 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)2002-02-17Torsten SpieckermannF3CCC813FD9D23103441969
Verified (Factored)2005-03-20Patrick BrownF3CCC813FD9D23108650240
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2022-12-09kutensB7644148DE871EFC21317293653
P-1 factors
DateFactorB1B2
2020-09-26531885539530172124016160000006000000
2020-09-266358073434889493426692390513263960000006000000
History
DateUserTypeResult
2022-12-09WeakForceBosonCERT
PRP Certification
Proof certified good
2022-12-09kutensC-PRP
M14018573/5318855395301721240161/63580734348894934266923905132639 : B7644148DE871EFC
PRP proof power = 8
PRP: Verified
Proof certified good
2020-09-26masserF-PM1
Factor: 338176731928865291431894253296111991796641952278714879 / (P-1, B1=6000000)
2020-07-05masserNF
no factor from 2^70 to 2^71
2020-04-08masserNF
no factor from 2^69 to 2^70
2018-03-09ramgeisNF
no factor from 2^68 to 2^69
2018-03-09ramgeisNF
no factor from 2^67 to 2^68
2015-08-19ThaNF
no factor from 2^66 to 2^67
2014-07-22NesowaNF
no factor from 2^65 to 2^66