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

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MnStatusDetails
938969Composite, with 3 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
18704262491030.8old
126047198571133.62008-07-16 09:29:03
13832005301940811991960.32016-01-25 12:40:21
ECM
DigitsB1Curves
2550000280 / 280
30250000100 / 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
Verified2017-09-30alpertronB76AE16B3D6CEA783013
Verified2017-10-15Oliver KruseB76AE16B3D6CEA7831351913
Verified2020-04-23Oliver KruseBB3BEF3062A5BF5D389663353
Verified2025-05-22kkmrkkblmbrbkBB3BEF3062A5BF5D310203653
History
DateUserTypeResult
2025-05-22OnychomysCERT
PRP Certification
Proof certified good
2025-05-22kkmrkkblmbrbkC-PRP
M938969/1870426249/12604719857/1383200530194081199 : BB3BEF3062A5BF5D
PRP proof power = 6
PRP: Verified
Proof certified good
2020-04-23Oliver KruseC-PRP
M938969/1870426249/12604719857/1383200530194081199 : BB3BEF3062A5BF5D
PRP: Verified
PRP without proof (small exponent)
2017-10-15Oliver KruseC-PRP
M938969/1870426249/12604719857/1383200530194081199 : B76AE16B3D6CEA78
PRP: Verified
PRP without proof (small exponent)
2017-09-30alpertronC-PRP
M938969/12604719857/1383200530194081199/1870426249 : B76AE16B3D6CEA78
PRP: Verified
PRP without proof (not generated)
2017-09-28Oliver KruseC-PRP
M938969/1870426249/12604719857/1383200530194081199 : B76AE16B3D6CEA78
PRP without proof (not generated)
2016-03-17alpertronNF-PM1
B1=200000, B2=5000000, E=6
2016-01-25TJAOIF
Factor: 1383200530194081199 / TF: 60-61
2008-07-16J FeitsmaF
Factor: 12604719857