Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

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Exponent Range:





MnDetails
2347949
Composite, with 3 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 262
Factored
FactorDigitsBitsDate
36083796269255830871961.62012-05-29 11:43:22
19001604760347568971936232580.72026-03-19 10:25:39
24109429552284722071048792581.02026-03-19 10:25:39
ECM
DigitsB1Curves
2550000280 / 280
30250000160 / 640
Estimated T-Level: 26.3 ⓘ
TF below 2^82 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShiftSoftware
FactoredDavid LintonD39CB9F924A9D5250Windows,Prime95,v14,(aka WQ1)
FactoredJoakim RosqvistD39CB9F924A9D5250Linux 32-bit,Prime95,v13,(aka WP2)
Factored1999-03-01Andrew Haveland-RobinsonD39CB9F924A9D5252222161Windows,Prime95,v17,(aka WT1)
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Factored
PRP without proof (not generated)
2017-10-12Oliver KruseFDC4CA22CC00D0D51013
Factored
PRP without proof (not generated)
2017-11-24storm5510FDC4CA22CC00D0D51204988413
Verified
Certified Good
2026-03-24Naegi MakotoD6C1BA847E22F1213170794453
History
DateUserTypeResult
2026-03-24David NewmanCERT
Proof certified good
2026-03-24Naegi MakotoC-PRP
Proof Certified Good

Proof Power: 7

2026-03-19TJAOIF-ECMFactors: 1900160476034756897193623,2410942955228472207104879 / ECM curve 19, B1=250000, B2=260702211, Edwards Sigma=8816599004290062
2018-03-18alpertronNF-PM1B1=500000, B2=15000000, E=12
2017-11-24storm5510C-PRPM2347949/3608379626925583087 : FDC4CA22CC00D0D5
2017-10-12Oliver KruseC-PRPM2347949/3608379626925583087 : FDC4CA22CC00D0D5
2012-05-29Sebastian HornbostelF-ECMFactor: 3608379626925583087
2010-03-05BudNF-PM1B1=500000, B2=10000000, E=12
2009-01-16Sturle SundeNFno factor TF: 60-61
2003-09-21-anonymous-NF-PM1B1=2048, B2=204800
1999-05-09-anonymous-C-LLD39CB9F924A9D525
1999-03-01-anonymous-C-LLD39CB9F924A9D525