is 2 9365599 - 1
has 2819327 decimal digits
takes 2.589 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-LC8456E2FF4EA96F5double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual2673.172764.1791 %17500038500000.15044.1619 %3.323065.6699 %
Target2686.364264.7059 %6000070000000.17562.4584 %6.539865.5735 %
Difference-1-3.1916-0.5268 %+115000-3150000-0.0252+1.7035%-3.2168+0.0964 %

Known prime factors (1 factor, 66.5 bits, 0.00071038% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
93655991066344391093829087272166.5315692878752837
206887 × 27516851
2014-08-05206887275168511.57690.67921.1222

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2003-04-19Team Prime Ribv4_computers50000812500--0.0372.063%
2012-08-30James Heinrichi7-92017500038500006--0.1503.740%


Trial Factoring results:
575859606162636465666768
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1998-11-14ANONYMOUSv4_computers212550.001
1999-03-01ANONYMOUSv4_computers212640.210
2013-09-05NesowaManual testing2642650.399


ECM factoring results:
Total ECM effort:1.261 GHz-days
Estimated T-Level:0.577
DigitsB1CompleteFacMiss
20110000.11589.102%
25500000.01198.938%


ECM Summary

B1B2factorcurvesGHz-days
50000500000031.261


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2000-03-08ANONYMOUSv4_computersC8456E2FF4EA96F52.589
2003-04-27Team Prime Ribv4_computersC8456E2FF4EA96F52.589


PRP results:
dateuseridcompidcofactorsres64
2019-08-31mnd927016
106634439109382908727
938046875AD8F28E
2020-11-19kutensryzen2
106634439109382908727
938046875AD8F28E


CERT results:
dateuseridcompid
2020-11-19Section 31verge


P-1 factor-bounds graph:
B1 = 175000, B2 = 3850000 (P-1 stage 2)
B1 = 175000 (P-1 stage 1)
B1 = 50000, B2 = 812500 (P-1 stage 2)
B1 = 50000 (P-1 stage 1)
103
104
105
106
103
104
105
106
107
108
TF factor-bounds graph:
265
264
255
this exponent TF target: 68
TF double-checked to: 67
ECM T-Level=0.58 ~= -15-bit
250
260
270
JSON version of this page
Last modified: 2024-02-29T14:28:04+00:00