Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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MnDetails
2320649
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 268
TF target 262
Factored
FactorDigitsBitsDate
1858335394678939981192167.32010-02-17 08:43:18
ECM
DigitsB1Curves
2550000280 / 280
30250000176 / 640
Estimated T-Level: 26.4
TF below 2^83 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShiftSoftware
FactoredKevin Jaget21FDCF0E9CDAA0610Linux 32-bit,Prime95,v13,(aka WP2)
Factored1999-03-15Sam Robertson21FDCF0E9CDAA0612149761Linux 32-bit,Prime95,v17,(aka WT2)
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors
ShiftTypeBase
Verified
PRP without proof (not generated)
2017-10-11Oliver KruseB9AB1E03A097B3101013
Verified
PRP without proof (not generated)
2017-11-23storm5510B9AB1E03A097B310113431213
History
DateUserTypeResult
2021-04-22ViliamFNF-PM1B1=5000000, B2=505000000
2018-03-05alpertronNF-PM1B1=500000, B2=15000000, E=12
2017-11-23storm5510C-PRPM2320649/185833539467893998119 : B9AB1E03A097B310
2017-10-11Oliver KruseC-PRPM2320649/185833539467893998119 : B9AB1E03A097B310
2010-02-17BudF-PM1Factor: 185833539467893998119
2009-01-10Sturle SundeNFno factor TF: 60-61
2003-09-14-anonymous-NF-PM1B1=2048, B2=204800
1999-03-15-anonymous-C-LL21FDCF0E9CDAA061