Marin Mersenne 2^P-1
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MnStatusDetails
386521Composite, with 4 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
61843361825.9old
98949377826.62008-07-21 09:18:16
6590800449928211601832169.22014-10-24 12:46:33
32531482673829403321331206508456289736118.02024-09-16 18:38:14
ECM
DigitsB1Curves
2550000280 / 280
30250000422 / 640
Estimated T-Level: 28.3
TF below 2^89 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-09-23Oliver Kruse529147C957D80A073013
Verified (Factored)2017-09-24Oliver Kruse529147C957D80A073013
Verified (Factored)2017-11-07kkmrkkblmbrbk529147C957D80A0731931713
Verified (Factored)2020-04-18Oliver KruseF554B78ED2C4E0E1334867453
Verified2024-09-16yuriy_5-1F554B78ED2C4E0E1422705253
P-1 factors
DateFactorB1B2
2024-09-16325314826738294033213312065084562897120000021719840021900
History
DateUserTypeResult
2024-09-16BigRichCERT
PRP Certification
Proof certified good
2024-09-16yuriy_5-1C-PRP
M386521/61843361/98949377/659080044992821160183/325314826738294033213312065084562897 : F554B78ED2C4E0E1
PRP proof power = 5
PRP: Verified
Proof certified good
2024-09-16yuriy_5-1F-PM1
Factor: 325314826738294033213312065084562897 / (P-1, B1=12000002, B2=1719840021900)
2024-02-19Denial140NF-PM1
B1=1000000, B2=6154694700
2022-02-07Lisander ViaeneNF-PM1
B1=50000
2020-04-18Oliver KruseC-PRP
M386521/61843361/98949377/659080044992821160183 : F554B78ED2C4E0E1
PRP: Verified (Factored)
PRP without proof (small exponent)
2017-11-07kkmrkkblmbrbkC-PRP
M386521/61843361/98949377/659080044992821160183 : 529147C957D80A07
PRP: Verified (Factored)
PRP without proof (small exponent)
2017-09-24Oliver KruseC-PRP
M386521/61843361/98949377/659080044992821160183 : 529147C957D80A07
PRP: Verified (Factored)
PRP without proof (not generated)
2017-09-23Oliver KruseC-PRP
M386521/61843361/98949377/659080044992821160183 : 529147C957D80A07
PRP: Verified (Factored)
PRP without proof (not generated)
2014-10-24TJAOIF-ECM
Factor: 659080044992821160183
2008-07-21J FeitsmaF
Factor: 98949377