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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Exponent Range:





MnDetails
3784357
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 271
TF target 264
Factored
FactorDigitsBitsDate
30742556697308856931330492581.32025-01-22 12:57:51
ECM
DigitsB1Curves
2550000218 / 280
Estimated T-Level: 23.9
TF below 2^74 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShiftSoftware
FactoredMark Juenemann864932166D18E9090Windows,Prime95,v14,(aka WQ1)
Factored2000-04-27Alexandr Fomin864932166D18E9091927265Windows,Prime95,v19,NT service,(aka WV5)
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors
ShiftTypeBase
Verified
Certified Good
2025-01-22fordobr348E57DB020FF9CD1317704353
History
DateUserTypeResult
2025-01-22Laurent_LampinCERT
Proof certified good
2025-01-22fordobrC-PRPM3784357/3074255669730885693133049 : 348E57DB020FF9CD
Proof Certified Good

Proof Power: 7

2025-01-22fordobrF-ECMFactor: 3074255669730885693133049 / ECM curve 27, B1=102546, B2=194584005, Edwards Sigma=2369377471807335
2024-12-20TJAOINFno factor TF: 70-71
2023-02-09mikrNF-PM1B1=8000000, B2=11215115142
2022-10-26JossNF-PM1B1=1000000, B2=130364850
2021-04-06axnNFno factor TF: 69-70
2020-12-03axnNFno factor TF: 68-69
2018-10-29TJAOINFno factor TF: 67-68
2016-11-13Gordon SpenceNFno factor TF: 66-67
2016-04-07mikrNF-PM1B1=1600000, B2=66000000, E=12
2016-03-02ramgeisNFno factor TF: 65-66
2016-02-23Mark RoseNFno factor TF: 62-63
2016-02-23Mark RoseNFno factor TF: 1-60
2015-01-27VictordeHollanderNFno factor TF: 64-65
2015-01-27VictordeHollanderNFno factor TF: 63-64
2012-04-17Squeeky_SquirrelNF-PM1B1=110000, B2=2062500, E=6
2012-03-23GrunwalderGIMPNFno factor TF: 1-63
2011-04-13markrNFno factor TF: 61-62
2009-07-14Carsten KossendeyNF-PM1B1=20000, B2=265000
2009-02-28S485122NFno factor TF: 60-61
2000-04-27-anonymous-C-LL864932166D18E909