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

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MnStatusDetails
1942307Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
62930746811032.6old
9820492480890638401774392792789.72024-02-19 12:50:02
ECM
DigitsB1Curves
2550000280 / 280
30250000106 / 640
Estimated T-Level: 25.8
TF below 2^81 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-10-05Oliver Kruse0BC7E7DEA2D923F11013
Verified (Factored)2017-11-15kkmrkkblmbrbk0BC7E7DEA2D923F11182600713
Verified2024-02-19Naegi Makoto968215CE64C6272E297411753
History
DateUserTypeResult
2024-02-19iwesCERT
PRP Certification
Proof certified good
2024-02-19Naegi MakotoC-PRP
M1942307/6293074681/982049248089063840177439279 : 968215CE64C6272E
PRP proof power = 7
PRP: Verified
Proof certified good
2024-02-19TJAOIF-ECM
Factor: 982049248089063840177439279 / (ECM curve 25, B1=250000, B2=40000000, Sigma=8480919208383185)
2017-11-15kkmrkkblmbrbkC-PRP
M1942307/6293074681 : 0BC7E7DEA2D923F1
PRP: Verified (Factored)
PRP without proof (not generated)
2017-10-05Oliver KruseC-PRP
M1942307/6293074681 : 0BC7E7DEA2D923F1
PRP: Verified (Factored)
PRP without proof (not generated)
2016-03-16alpertronNF-PM1
B1=500000, B2=15000000, E=12