is 2 9073091 - 1
has 2731273 decimal digits
takes 2.508 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-LD59D308B1FFCAC00double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual2673.274964.1791 %11000020075000.08553.3522 %3.360565.3799 %
Target2686.569464.7059 %6000065000000.16472.4030 %6.734165.5540 %
Difference-1-3.2945-0.5268 %+50000-4492500-0.0791+0.9492%-3.3736-0.1741 %

Known prime factors (1 factor, 71.5 bits, 0.00078770% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
907309132671806787590011041192271.469180047829276649
180047829276649
2014-03-02118004782927664969.6803,931,2947,342,563

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2003-02-24Team Prime Ribv4_computers500007750004--0.0362.027%
2012-12-12NesowaEPC11000020075006--0.0862.991%


Trial Factoring results:
575859606162636465666768
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1998-12-21ANONYMOUSv4_computers212550.001
1998-12-13ANONYMOUSv4_computers212620.034
1998-12-27Trent Tauferv4_computers212630.108
1999-12-08ANONYMOUSv4_computers212640.216
2013-09-14NesowaManual testing2642650.412


ECM factoring results:
Total ECM effort:1.261 GHz-days
DigitsB1CompleteFacMiss


ECM Summary

B1B2factorcurvesGHz-days
11.261


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2000-04-05ANONYMOUSv4_computersD59D308B1FFCAC002.508
2003-02-27Team Prime Ribv4_computersD59D308B1FFCAC002.508


PRP results:
dateuseridcompidcofactorsres64
2019-06-07Niels_Mache_NextcloudSuperDry-X
3267180678759001104119
DB09D826E0CCC5B9
2020-10-14kutensterra
3267180678759001104119
DB09D826E0CCC5B9


CERT results:
dateuseridcompid
2020-10-14kutensryzen3


P-1 factor-bounds graph:
B1 = 110000, B2 = 2007500 (P-1 stage 2)
B1 = 110000 (P-1 stage 1)
B1 = 50000, B2 = 775000 (P-1 stage 2)
B1 = 50000 (P-1 stage 1)
100
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106
100
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1010
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TF factor-bounds graph:
265
264
263
262
255
this exponent TF target: 68
TF double-checked to: 67
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Last modified: 2024-03-13T02:15:48+00:00