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
3526993
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 272
TF target 264
Factored
FactorDigitsBitsDate
2123743570800512121993478632787.52025-01-21 11:06:37
ECM
DigitsB1Curves
2550000257 / 280
Estimated T-Level: 24.6
TF below 2^77 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShiftSoftware
FactoredShaun Case0FDFD7D027B949870Windows,Prime95,v14,(aka WQ1)
Factored1999-10-15Ben Hampson0FDFD7D027B949872020704Windows,Prime95,v17,NT service,(aka WT5)
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors
ShiftTypeBase
Verified
Certified Good
2025-01-21fordobr25FACA30F812088F1146224253
History
DateUserTypeResult
2025-01-21cameloidCERT
Proof certified good
2025-01-21fordobrC-PRPM3526993/212374357080051212199347863 : 25FACA30F812088F
Proof Certified Good

Proof Power: 7

2025-01-21fordobrF-ECMFactor: 212374357080051212199347863 / ECM curve 28, B1=119939, B2=176568315, Edwards Sigma=6310422555892386
2023-06-09Sid & AndyNF-PM1B1=5900000, B2=17849291460
2022-01-27mikrNF-PM1B1=4000000, B2=324000000
2021-09-15ArtyomPNF-PP1Start=6/5, B1=50000, B2=2500000
2021-09-15ArtyomPNF-PP1Start=2/7, B1=50000, B2=2500000
2021-03-19-anonymous-NFno factor TF: 71-72
2021-03-17-anonymous-NFno factor TF: 70-71
2021-03-17-anonymous-NFno factor TF: 69-70
2021-01-19axnNFno factor TF: 68-69
2021-01-08Dylan DelgadoNF-PM1B1=1600000, B2=50000000, E=12
2018-11-26TJAOINFno factor TF: 67-68
2017-05-06JossNF-PM1B1=340000, B2=3400000, E=6
2017-01-10Gordon SpenceNFno factor TF: 66-67
2016-03-03ramgeisNFno factor TF: 65-66
2016-02-23Mark RoseNFno factor TF: 1-60
2016-02-23Mark RoseNFno factor TF: 62-63
2015-10-22Squeeky_SquirrelNF-PM1B1=170000, B2=4590000, E=6
2015-01-27VictordeHollanderNFno factor TF: 64-65
2015-01-27VictordeHollanderNFno factor TF: 63-64
2014-11-10JossNF-PM1B1=96396
2014-08-07JossNF-PM1B1=78198
2012-06-20GrunwalderGIMPNFno factor TF: 1-63
2011-11-21USAFSSNF-PM1B1=60000, B2=990000, E=6
2011-07-05Grant McCrackenNFno factor TF: 61-62
2009-07-06Carsten KossendeyNF-PM1B1=20000, B2=245000
2009-03-18S485122NFno factor TF: 60-61
1999-10-15-anonymous-C-LL0FDFD7D027B94987