Marin Mersenne 2^P-1
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MnStatusDetails
3267001Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
100997455129054635020712373.12021-07-09 19:02:35
ECM
DigitsB1Curves
255000049 / 280
Estimated T-Level: 20.9
TF below 2^64 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Joel Armengaud53B24893E8CABCA40
Verified (Factored)1999-09-07The-x53B24893E8CABCA42209664
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2021-07-10kutens28E931FD0EAEEDE41168421553
History
DateUserTypeResult
2022-02-12JossNF-PM1
B1=1000000, B2=119912100
2021-07-11Cameran430CERT
PRP Certification
Proof certified good
2021-07-10kutensC-PRP
M3267001/10099745512905463502071 : 28E931FD0EAEEDE4
PRP proof power = 7
PRP: Verified
Proof certified good
2021-07-09kutensF-ECM
Factor: 10099745512905463502071 / (ECM curve 1, B1=50000, B2=6800000, Sigma=1950716995818368)
2021-05-31TJAOINF
no factor from 2^68 to 2^69
2021-02-14axnNF-PM1
B1=10000000, B2=400000000
2020-11-11mikrNF-PM1
B1=4000000, B2=150000000, E=12
2018-12-17TJAOINF
no factor from 2^67 to 2^68
2017-04-04Gordon SpenceNF
no factor from 2^66 to 2^67
2015-06-28ThaNF
no factor from 2^65 to 2^66
2013-10-18David CampeauNF
no factor from 2^64 to 2^65
2012-09-07Richard B. WoodsNF
no factor from 2^63 to 2^64
2012-09-03Richard B. WoodsNF
no factor from 2^62 to 2^63
2012-06-23c10ck3rNF-PM1
B1=1000000, B2=30000000, E=12
2011-09-17USAFSSNF-PM1
B1=55000, B2=866250, E=6
2011-07-02Rob_DeeNF
no factor from 2^61 to 2^62
2009-07-08Carsten KossendeyNF-PM1
B1=15000, B2=191250
2009-04-03S485122NF
no factor from 2^60 to 2^61