Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
14005253Factored
FactorDigitsBitsDate
2830763936150859228079612477.92020-08-04 17:11:32
ECM
DigitsB1Curves
25500002 / 280
Estimated T-Level: 20.0
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Martin Fahlgren6CEDDD9F8C106C751840242
Bad2002-03-24Robert Barbrow66E3F2DB28B38EF75929756
Verified (Factored)2005-05-12Chris6CEDDD9F8C106C757775749
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2022-12-04LordJulius347DB08C34ACAEF91548617453
History
DateUserTypeResult
2023-10-12nordiNF-PM1
B1=300000, B2=332536050
2022-12-04UmbrarianCERT
PRP Certification
Proof certified good
2022-12-04LordJuliusC-PRP
M14005253/283076393615085922807961 : 347DB08C34ACAEF9
PRP proof power = 8
PRP: Verified
Proof certified good
2022-10-04nordiNF-PM1
B1=300000
2020-08-04masserF-ECM
Factor: 283076393615085922807961 / (ECM curve 1, B1=50000, B2=5000000, Sigma=1732618152369175)
2020-04-27masserNF
no factor from 2^70 to 2^71
2018-09-07mikrNF
no factor from 2^69 to 2^70
2018-02-05ramgeisNF
no factor from 2^68 to 2^69
2018-02-05ramgeisNF
no factor from 2^67 to 2^68
2017-03-26ThaNF-PM1
B1=300000, B2=6000000, E=12
2017-03-23James HeinrichNF-PM1
B1=145000, B2=2537500, E=6
2015-08-18ThaNF
no factor from 2^66 to 2^67
2014-07-22NesowaNF
no factor from 2^65 to 2^66