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

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MnStatusDetails
2853937Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
136988977927.0old
16774222336393820891960.52016-02-16 12:10:43
ECM
DigitsB1Curves
2550000103 / 280
Estimated T-Level: 21.8
TF below 2^68 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-22Oliver KruseAA1ED8AA52063F462169340153
Verified2017-12-07kkmrkkblmbrbkAA1ED8AA52063F462166467953
History
DateUserTypeResult
2022-11-18USAFSSNF-PM1
B1=255000, B2=203416290
2017-12-07kkmrkkblmbrbkC-PRP
M2853937/136988977/1677422233639382089 : AA1ED8AA52063F46
PRP: Verified
PRP without proof (not generated)
2017-10-22Oliver KruseC-PRP
M2853937/136988977/1677422233639382089 : AA1ED8AA52063F46
PRP: Verified
PRP without proof (not generated)
2016-02-16TJAOIF
Factor: 1677422233639382089 / TF: 60-61