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

PrimeNet Exponent Status

Exponent Range:





MnDetails
8419423
Composite, with 2 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 268
Factored
FactorDigitsBitsDate
1667030224849300345672167.22021-11-29 11:44:38
47269776355675156610231832582.02012-07-26 08:05:37
P-1 factors
DateFactorsB1B2
2012-07-264726977635567515661023183
1000001825000
LL
StatusDateUserResidueShiftSoftware
Factored2000-06-26Ralph SassenhausenDBFA1F7D133B9DE12693940Windows,Prime95,v18,(aka WU1)
Factored2002-09-29Ars Technica Team Prime RibDBFA1F7D133B9DE14059704Windows,Prime95,v21,NT service,(aka WX5)
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors
ShiftTypeBase
Factored
PRP without proof (not generated)
2018-10-24rucioE2E8BD310F385E1D150816553
Factored
PRP without proof (not generated)
2020-05-25Luigi MorelliE2E8BD310F385E1D1528986553
Verified
Certified Good
2021-12-05Joe S.E2E8BD310F385E1D261326453
History
DateUserTypeResult
2025-01-03Stef42NF-PM1B1=1125000, B2=1551786600
2022-04-10James HeinrichNFno factor TF: 66-67
2022-04-10James HeinrichNFno factor TF: 64-65
2022-04-10James HeinrichNFno factor TF: 65-66
2022-04-09LordJuliusNFno factor TF: 65-66
2022-04-09LordJuliusNFno factor TF: 66-67
2022-04-09LordJuliusNFno factor TF: 1-64
2022-04-09LordJuliusNFno factor TF: 64-65
2021-12-05Michal BryndzaCERT
Proof certified good
2021-12-05Joe S.C-PRPM8419423/4726977635567515661023183/166703022484930034567 : E2E8BD310F385E1D
Proof Certified Good

Proof Power: 8

2021-11-29TJAOIFFactor: 166703022484930034567
2020-05-25Luigi MorelliC-PRPM8419423/4726977635567515661023183 : E2E8BD310F385E1D
2018-10-24rucioC-PRPM8419423/4726977635567515661023183 : E2E8BD310F385E1D
2012-07-26bcp19F-PM1Factor: 4726977635567515661023183
2002-10-07-anonymous-NFno factor TF: 1-64
2002-09-29Team Prime RibNF-PM1B1=45000, B2=675000
2002-09-29Team Prime RibC-LLDBFA1F7D133B9DE1
2000-06-29-anonymous-C-LLDBFA1F7D133B9DE1
2000-06-26-anonymous-C-LLDBFA1F7D133B9DE1
2000-01-19-anonymous-NFno factor TF: 1-64
1998-09-27-anonymous-NFno factor TF: 1-63