is 2 3294287 - 1
has 991680 decimal digits
takes 0.346 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L6769F160BCAA26B4double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26818.093467.6471 %32942873536864103.40909.7548 %21.502470.8030 %
Target2641.080565.6250 %1700014000000.01411.6887 %1.094566.2055 %
Difference+4+17.0130+2.0221 %+3277287+352286410+3.3949+8.0661%+20.4078+4.5975 %

Known prime factors (1 factor, 65.6 bits, 0.00199240% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
3294287573067293675386196012065.6358697895685400
23 × 3 × 52 × 2339 × 6197731
2013-11-07233961977313.95280.05180.0960

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2003-12-02Richard B. Woodsv4_computers2400024000--0.0040.637%
2004-02-23Richard B. Woodsv4_computers7500075000--0.0111.295%
2007-05-12Richard B. Woodsv4_computers10250001025000--0.1563.949%
2013-11-07David Campeaui5-2500k2065.6350.3990.000%
2020-12-25JossManual testing109809109809---1.582%
2021-01-01JossManual testing32942832942876---5.155%
2021-07-11JossManual testing32942873294287--0.4305.624%
2021-12-19JossManual testing3294287109008900
skipped known factor: 57306729367538619601
--1.37911.236%
2022-08-17JossManual testing3294287353686410
skipped known factor: 57306729367538619601
--4.49913.058%


Trial Factoring results:
575859606162636465666768
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2001-05-20David Campeauv4_computers212600.023
2006-12-18Richard B. Woodsv4_computers212620.093
2007-07-24Richard B. Woodsv4_computers212630.298
2022-04-19LordJuliusManual testing21267
skipped known factors(?)
2021-07-11JossManual testing267268


ECM factoring results:
Total ECM effort:0.736 GHz-days
Estimated T-Level:1.154
DigitsB1CompleteFacMiss
20110000.23179.392%
25500000.02197.887%
302500000.00199.865%


ECM Summary

B1B2factorcurvesGHz-days
50000500000060.736


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-09-22ANONYMOUSv4_computers6769F160BCAA26B40.346


PRP results:
dateuseridcompidcofactorsres64
2017-11-03Oliver KruseGTX-1
57306729367538619601
4D527D95B3468E3B
2017-12-14kkmrkkblmbrbkc4.xlarge
57306729367538619601
4D527D95B3468E3B


CERT results:
No CERT results for M3294287


P-1 factor-bounds graph:
B1 = 3294287, B2 = 353686410 (P-1 stage 2)
B1 = 3294287, B2 = 109008900 (P-1 stage 2)
B1 = 3294287 (P-1 stage 1)
B1 = 1025000 (P-1 stage 1)
B1 = 329428, B2 = 3294287 (P-1 stage 2)
B1 = 329428 (P-1 stage 1)
B1 = 109809 (P-1 stage 1)
B1 = 75000 (P-1 stage 1)
B1 = 24000 (P-1 stage 1)
102
103
104
105
106
107
102
103
104
105
106
107
108
109
TF factor-bounds graph:
268
267
263
262
260
this exponent TF target: 64
TF double-checked to: 67
ECM T-Level=1.15 ~= -13-bit
250
260
270
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Last modified: 2024-03-13T02:15:48+00:00