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

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MnStatusDetails
2835223Composite, with 3 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
68045353826.0old
272181409928.02008-09-07 19:42:12
119882790910021031753.42014-09-23 11:27:07
ECM
DigitsB1Curves
255000057 / 280
Estimated T-Level: 21.0
TF below 2^65 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-15Yaroslav BerezhkoDA50FC75DA1BD2DE3013
Verified2017-11-16Oliver KruseDA50FC75DA1BD2DE3247360213
History
DateUserTypeResult
2023-02-02USAFSSNF-PM1
B1=360000, B2=287380170
2017-11-16Oliver KruseC-PRP
M2835223/68045353/272181409/11988279091002103 : DA50FC75DA1BD2DE
PRP: Verified
PRP without proof (not generated)
2017-10-15Yaroslav BerezhkoC-PRP
M2835223/68045353/272181409/11988279091002103 : DA50FC75DA1BD2DE
PRP: Verified
PRP without proof (not generated)
2014-09-23TJAOIF
Factor: 11988279091002103 / TF: 53-54
2008-09-07Will EdgingtonF
Factor: 272181409