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

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MnStatusDetails
1877459Composite, with 4 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
58614269991032.4old
1290978357591236.92008-07-15 07:47:44
312632530912489359671823592684.72021-09-10 07:34:55
401149570064868235258383778972995.02023-11-20 12:22:45
ECM
DigitsB1Curves
2550000280 / 280
30250000107 / 640
Estimated T-Level: 25.8
TF below 2^81 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-10-04Oliver Kruse1C1DDD2B44F3836B2013
Verified (Factored)2017-11-08kkmrkkblmbrbk1C1DDD2B44F3836B212975813
Verified (Factored)2021-09-11JackBlock51DDF5B059CE4D883146125953
Verified2023-11-20Naegi Makoto51DDF5B059CE4D884139353253
History
DateUserTypeResult
2023-11-20LOBESCERT
PRP Certification
Proof certified good
2023-11-20Naegi MakotoC-PRP
M1877459/5861426999/129097835759/31263253091248935967182359/40114957006486823525838377897 : 51DDF5B059CE4D88
PRP proof power = 7
PRP: Verified
Proof certified good
2023-11-20TJAOIF-ECM
Factor: 40114957006486823525838377897 / (ECM curve 38, B1=250000, B2=40000000, Sigma=3179706088352998)
2021-09-11Ben DeloCERT
PRP Certification
Proof certified good
2021-09-11JackBlockC-PRP
M1877459/5861426999/129097835759/31263253091248935967182359 : 51DDF5B059CE4D88
PRP proof power = 7
PRP: Verified (Factored)
Proof certified good
2021-09-10TJAOIF-ECM
Factor: 31263253091248935967182359 / (ECM curve 76, B1=50000, B2=6600000)
2017-11-08kkmrkkblmbrbkC-PRP
M1877459/5861426999/129097835759 : 1C1DDD2B44F3836B
PRP: Verified (Factored)
PRP without proof (not generated)
2017-10-04Oliver KruseC-PRP
M1877459/5861426999/129097835759 : 1C1DDD2B44F3836B
PRP: Verified (Factored)
PRP without proof (not generated)
2016-03-16alpertronNF-PM1
B1=500000, B2=15000000, E=12
2008-07-15J FeitsmaF
Factor: 129097835759