is 2 1082377 - 1
has 325828 decimal digits
takes 0.032 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-LD5F2C105CF43598Bdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26727.452568.6567 %858000889674786020.866411.7989 %48.318872.3549 %
Target2600.141965.0000 %45001000000.00040.6530 %0.142365.2285 %
Difference+7+27.3106+3.6567 %+853500+8896647860+20.8659+11.1459%+48.1765+7.1263 %

Known prime factors (1 factor, 83.6 bits, 0.00771943% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1082377141930690239225394875073132683.5536556435060945742328
23 × 3 × 59341 × 4603643251817
2011-06-185934146036432518171,828,64810,77920,133

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2024-02-05Mark Roseworktop8580008896747860--21.5919.262%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2001-11-24ANONYMOUSv4_computers212570.018
2022-03-07firejugglerManual testing257260
2022-03-07LordJuliusManual testing257260
2009-02-26Sturle Sundeczerny.ifi2602610.142
2010-11-16Michael CManual testing2612620.284
2022-04-12LordJuliusManual testing21264


ECM factoring results:
Total ECM effort:18.603 GHz-days
Estimated T-Level:25.686
DigitsB1CompleteFacMiss
201100015.1690.000%
25500001.66318.955%
302500000.13787.182%
3510000000.00999.077%


ECM Summary

B1B2factorcurvesGHz-days
10.035
5000050000002809.70
25000035000000448.866


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2004-01-18ANONYMOUSv4_computersD5F2C105CF43598B0.032


PRP results:
dateuseridcompidcofactorsres64
2017-09-28Oliver KruseGTX-0
14193069023922539487507313
253107235E17C332
2017-10-16Oliver KruseThreadripper-PC
14193069023922539487507313
253107235E17C332
2018-01-02ATHec2-1xh
14193069023922539487507313
253107235E17C332


CERT results:
No CERT results for M1082377


P-1 factor-bounds graph:
B1 = 858000, B2 = 8896747860 (P-1 stage 2)
B1 = 858000 (P-1 stage 1)
103
104
105
106
103
104
105
106
107
108
109
1010
1011
1012
1013
TF factor-bounds graph:
264
262
261
260
257
this exponent TF target: 60
TF double-checked to: 67
ECM T-Level=25.69 ~= 69-bit
250
260
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290
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Last modified: 2024-03-13T02:15:48+00:00