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
8366459
Composite, with 2 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 268
Factored
FactorDigitsBitsDate
99023367205765871031963.1old
1795752159665831134492167.32022-03-08 10:21:59
ECM
DigitsB1Curves
255000088 / 280
Estimated T-Level: 21.6 ⓘ
TF below 2^67 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShiftSoftware
Factored1999-10-29Eric LewisC1131D3C574CE3667259924Windows,Prime95,v18,(aka WU1)
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Factored
PRP without proof (not generated)
2018-10-21Oliver Kruse2DA32C6213B525D81811575053
Factored
PRP without proof (not generated)
2020-05-09Luigi Morelli2DA32C6213B525D81761676553
Verified
Certified Good
2022-03-14riccardo uberti2DA32C6213B525D82281019353
History
DateUserTypeResult
2022-04-09LordJuliusNFno factor TF: 66-67
2022-04-09LordJuliusNFno factor TF: 65-66
2022-04-09LordJuliusNFno factor TF: 64-65
2022-03-26riccardo ubertiNF-PP1Start=6/5, B1=3450000, B2=72000000
2022-03-23riccardo ubertiNF-PP1Start=2/7, B1=3000000, B2=60000000
2022-03-14riccardo ubertiNF-PM1B1=3000000, B2=60000000
2022-03-14curtiscCERT
Proof certified good
2022-03-14riccardo ubertiC-PRPM8366459/9902336720576587103/179575215966583113449 : 2DA32C6213B525D8
Proof Certified Good

Proof Power: 8

2022-03-08TJAOIFFactor: 179575215966583113449
2020-05-09Luigi MorelliC-PRPM8366459/9902336720576587103 : 2DA32C6213B525D8
2018-10-21Oliver KruseC-PRPM8366459/9902336720576587103 : 2DA32C6213B525D8
2002-09-14Team Prime RibFFactor: 9902336720576587103
2001-12-22-anonymous-C-LLC1131D3C574CE366
1999-10-29-anonymous-C-LLC1131D3C574CE366
1998-12-13-anonymous-NFno factor TF: 1-63
1998-11-28-anonymous-NFno factor TF: 1-62
1998-09-06-anonymous-NFno factor TF: 1-61