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

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MnStatusDetails
2452231Composite, with 3 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
117707089926.8old
31737803539031341.52008-07-14 20:23:59
335935495594069867997992374.82018-02-27 08:15:41
ECM
DigitsB1Curves
2550000138 / 280
Estimated T-Level: 22.5
TF below 2^70 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-10-13Oliver Kruse8DBD1B02BE335256280967553
Verified (Factored)2017-11-28ATH8DBD1B02BE335256266602053
Verified2018-02-28Daniel Bamberger8DBD1B02BE3352563209359453
History
DateUserTypeResult
2018-09-28alpertronNF-PM1
B1=2000000, B2=60000000, E=12
2018-02-28Daniel BambergerC-PRP
M2452231/117707089/3173780353903/33593549559406986799799 : 8DBD1B02BE335256
PRP: Verified
PRP without proof (not generated)
2018-02-27Oliver KruseF-ECM
Factor: 33593549559406986799799 / (ECM curve 1, B1=50000, B2=5000000)
2017-11-28ATHC-PRP
M2452231/117707089/3173780353903 : 8DBD1B02BE335256
PRP: Verified
PRP without proof (not generated)
2017-10-13Oliver KruseC-PRP
M2452231/117707089/3173780353903 : 8DBD1B02BE335256
PRP: Verified
PRP without proof (not generated)
2008-07-14George WoltmanF-ECM
Factor: 3173780353903