is 2 10706027 - 1
has 3222836 decimal digits
takes 3.497 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-LAD7C8A18D7B88849double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26911.151465.2174 %12000016800000.09712.6562 %11.248566.1413 %
Target2685.567464.7059 %7000085000000.25072.7130 %5.818165.6634 %
Difference+1+5.5839+0.5115 %+50000-6820000-0.1536-0.0568 %+5.4303+0.4779 %

Known prime factors (1 factor, 72.4 bits, 0.00067630% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1070602762538007446596671480092272.405292069165557852
22 × 32 × 43 × 166237 × 1134977
2019-09-25166237113497789.3270.10370.1603

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2000-07-17ANONYMOUSv4_computers1200001680000--0.0972.980%


Trial Factoring results:
57585960616263646566676869
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-10-29ANONYMOUSv4_computers212640.183
2013-12-12lycornManual testing2642650.349
2015-05-12ThaManual testing2652660.698
2015-11-23VictordeHollanderManual testing2662671.396
2017-12-19ramgeisManual testing2672682.792
2017-12-19ramgeisManual testing2682695.584


ECM factoring results:
Total ECM effort:1.508 GHz-days
Estimated T-Level:0.577
DigitsB1CompleteFacMiss
20110000.11589.102%
25500000.01198.938%


ECM Summary

B1B2factorcurvesGHz-days
50000500000021.011
50000500000010.497


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2000-10-15ANONYMOUSv4_computersAD7C8A18D7B888493.497
2004-10-03dswansonv4_computersAD7C8A18D7B888493.497
2004-10-03dswansonv4_computersAD7C8A18D7B888493.497


PRP results:
dateuseridcompidcofactorsres64
2020-12-23Niels_Mache_Nextcloudconf4-a
6253800744659667148009
B119F4EE07A25DD0


CERT results:
dateuseridcompid
2020-12-23curtisccot201--01l


P-1 factor-bounds graph:
B1 = 120000, B2 = 1680000 (P-1 stage 2)
B1 = 120000 (P-1 stage 1)
104
105
106
104
105
106
107
TF factor-bounds graph:
269
268
267
266
265
264
this exponent TF target: 68
TF double-checked to: 67
ECM T-Level=0.58 ~= -15-bit
250
260
270
280
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Last modified: 2024-02-09T03:30:02+00:00