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

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MnStatusDetails
2118173Composite, with 4 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
3525783685431238.4old
3710294473463591548.42014-04-03 10:44:10
444235809581339274603192375.22024-08-30 09:28:28
27723949550543700754013992581.22022-08-30 05:25:04
ECM
DigitsB1Curves
2550000280 / 280
30250000171 / 640
Estimated T-Level: 26.3
TF below 2^82 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-10-07Oliver KruseC06823151FC4F9DD2013
Verified (Factored)2017-11-17kkmrkkblmbrbkC06823151FC4F9DD227666713
Verified (Factored)2022-08-31LordJulius6D7FFFAB22D538B4373788353
Verified (Factored)2022-09-02_p95holder_6D7FFFAB22D538B4331541153
Verified2024-08-31Naegi Makoto6D7FFFAB22D538B4431932553
History
DateUserTypeResult
2024-08-31Luke DurantCERT
PRP Certification
Proof certified good
2024-08-31Naegi MakotoC-PRP
M2118173/352578368543/371029447346359/2772394955054370075401399/44423580958133927460319 : 6D7FFFAB22D538B4
PRP proof power = 7
PRP: Verified
Proof certified good
2024-08-30TJAOIF-ECM
Factor: 44423580958133927460319 / (ECM curve 6, B1=250000, B2=303566445, Edwards Sigma=5758035145203750)
2022-09-02_p95holder_C-PRP
M2118173/352578368543/371029447346359/2772394955054370075401399 : 6D7FFFAB22D538B4
PRP: Verified (Factored)
PRP without proof (not generated)
2022-08-31JorgensCERT
PRP Certification
Proof certified good
2022-08-31LordJuliusC-PRP
M2118173/352578368543/371029447346359/2772394955054370075401399 : 6D7FFFAB22D538B4
PRP proof power = 7
PRP: Verified (Factored)
Proof certified good
2022-08-30_p95holder_F-ECM
Factor: 2772394955054370075401399 / (ECM curve 5, B1=50000, B2=5000000)
2017-11-17kkmrkkblmbrbkC-PRP
M2118173/352578368543/371029447346359 : C06823151FC4F9DD
PRP: Verified (Factored)
PRP without proof (not generated)
2017-10-07Oliver KruseC-PRP
M2118173/352578368543/371029447346359 : C06823151FC4F9DD
PRP: Verified (Factored)
PRP without proof (not generated)
2016-03-27alpertronNF-PM1
B1=500000, B2=15000000, E=12
2014-04-03TJAOIF
Factor: 371029447346359