Marin Mersenne 2^P-1
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MnStatusDetails
2072321Factored
FactorDigitsBitsDate
48953864511704215671962.12011-04-30 21:55:20
3119503046970479796012168.12022-07-28 14:06:33
ECM
DigitsB1Curves
2550000124 / 280
Estimated T-Level: 22.2 ⓘ
TF below 2^69 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)1998-01-16Steve Rogreson820D26CA773F71C20
Verified (Factored)1999-02-07Brian Nebeker820D26CA773F71C2181823
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified (Factored)2017-10-06Oliver Kruse6CB01201553BA3D81013
Verified (Factored)2017-11-19kkmrkkblmbrbk6CB01201553BA3D81141427413
Verified2022-07-29LordJuliusFAE627B9372267222101821153
Verified2022-07-30_p95holder_FAE627B9372267222307253
History
DateUserTypeResult
2022-07-30_p95holder_C-PRP
M2072321/4895386451170421567/311950304697047979601 : FAE627B937226722
PRP: Verified
PRP without proof (not generated)
2022-07-29JaytholomewCERT
PRP Certification
Proof certified good
2022-07-29LordJuliusC-PRP
M2072321/4895386451170421567/311950304697047979601 : FAE627B937226722
PRP proof power = 7
PRP: Verified
Proof certified good
2022-07-28_p95holder_F-ECM
Factor: 311950304697047979601 / (ECM curve 6, B1=50000, B2=5000000)
2022-03-09LordJuliusNF
no factor from 2^1 to 2^60
2017-11-19kkmrkkblmbrbkC-PRP
M2072321/4895386451170421567 : 6CB01201553BA3D8
PRP: Verified
PRP without proof (not generated)
2017-10-06Oliver KruseC-PRP
M2072321/4895386451170421567 : 6CB01201553BA3D8
PRP: Verified
PRP without proof (not generated)
2016-03-16alpertronNF-PM1
B1=500000, B2=15000000, E=12
2011-04-30James HintzF-ECM
Factor: 4895386451170421567
2011-01-19James HeinrichNF-PM1
B1=135000, B2=3071250, E=6
2011-01-06JossNF-PM1
B1=50000
2010-12-26JossNF-PM1
B1=30000
2009-07-25USAFSSNF-PM1
B1=20000, B2=260000
2009-01-02Sturle SundeNF
no factor from 2^60 to 2^61