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

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MnStatusDetails
325987Composite, with 5 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
59981609825.8old
237970511927.82008-07-21 09:16:51
1126174249431236.72008-07-21 09:16:51
358147424749298096412065.02014-04-27 12:51:05
53698791777402929094972272.22014-04-27 12:51:04
ECM
DigitsB1Curves
2550000280 / 280
30250000515 / 640
Estimated T-Level: 29.0
TF below 2^91 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-22Oliver Kruse8D6716B116A4CA665013
Verified2017-10-13Oliver Kruse8D6716B116A4CA66516109613
Verified2017-12-12ATH8D6716B116A4CA66521446113
Verified2020-04-18Oliver Kruse94996FC1475D4D83524145053
Verified2024-09-05kkmrkkblmbrbk94996FC1475D4D83526525753
History
DateUserTypeResult
2024-09-16yuriy5-1NF-PM1
B1=12000002, B2=1704299857260
2024-09-05Chun sung sooCERT
PRP Certification
Proof certified good
2024-09-05kkmrkkblmbrbkC-PRP
M325987/59981609/237970511/112617424943/35814742474929809641/5369879177740292909497 : 94996FC1475D4D83
PRP proof power = 5
PRP: Verified
Proof certified good
2023-03-20Denial140NF-PM1
B1=1000000, B2=20563492950
2022-02-06Lisander ViaeneNF-PM1
B1=50000
2020-04-18Oliver KruseC-PRP
M325987/59981609/237970511/112617424943/35814742474929809641/5369879177740292909497 : 94996FC1475D4D83
PRP: Verified
PRP without proof (small exponent)
2017-12-12ATHC-PRP
M325987/59981609/237970511/112617424943/35814742474929809641/5369879177740292909497 : 8D6716B116A4CA66
PRP: Verified
PRP without proof (small exponent)
2017-10-13Oliver KruseC-PRP
M325987/59981609/112617424943/237970511/5369879177740292909497/35814742474929809641 : 8D6716B116A4CA66
PRP: Verified
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M325987/known_factors : 8D6716B116A4CA66
PRP without proof (not generated)
2014-04-27Richard B. WoodsF-ECM
Factor: 35814742474929809641
2014-04-27Richard B. WoodsF-ECM
Factor: 5369879177740292909497
2008-07-21J FeitsmaF
Factor: 237970511
2008-07-21J FeitsmaF
Factor: 112617424943