Marin Mersenne 2^P-1
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MnStatusDetails
1000397Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
929528037082753743597772376.32017-09-08 12:47:53
3727896125291421359031112478.32009-03-12 20:30:56
ECM
DigitsB1Curves
2550000280 / 280
30250000155 / 640
Estimated T-Level: 26.2
TF below 2^82 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)David Slowinski1D940
Verified (Factored)Brian J. BeesleyB026DAF2C27CBD940
Verified (Factored)Philipp HänggiB026DAF2C27CBD940
PRP
StatusDateUserResidueShiftTypeBase
Verified (Factored)2024-10-24Paul UnderwoodC306D12C22185A23013
Verified (Factored)2025-09-01KrieselC306D12C22185A23013
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-28alpertronFE6CFBFA0B3DD3B82013
Verified2017-10-15Oliver KruseFE6CFBFA0B3DD3B8243146013
History
DateUserTypeResult
2025-09-01CoffCERT
PRP Certification
CERT proof power = 6
Proof certified good
2025-09-01KrieselC-PRP
C306D12C22185A23
PRP proof power = 6
PRP: Verified (Factored)
Proof certified good
2024-10-24Theo PolidanoCERT
PRP Certification
CERT proof power = 7
Proof certified good
2024-10-24Paul UnderwoodC-PRP
C306D12C22185A23
PRP proof power = 7
PRP: Verified (Factored)
Proof certified good
2021-11-10fbaurNF-PP1
Start=6/5, B1=12500000, B2=1337500000
2021-07-12ATHNF-PP1
Start=2/7, B1=1000000, B2=100000000
2021-02-17ViliamFNF-PM1
B1=25000000, B2=4025000000
2017-10-15Oliver KruseC-PRP
M1000397/372789612529142135903111/92952803708275374359777 : FE6CFBFA0B3DD3B8
PRP: Verified
PRP without proof (not generated)
2017-09-28alpertronC-PRP
M1000397/372789612529142135903111/92952803708275374359777 : FE6CFBFA0B3DD3B8
PRP: Verified
PRP without proof (not generated)
2017-09-08TJAOIF-ECM
Factor: 92952803708275374359777 / (ECM curve 77, B1=50000, B2=5000000)
2016-03-17alpertronNF-PM1
B1=300000, B2=10000000, E=12
2009-03-12Sturle SundeF-ECM
Factor: 372789612529142135903111