is 2 10781369 - 1
has 3245516 decimal digits
takes 3.522 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-LAC6455080D0F02B4double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual2672.756064.1791 %13000021125000.11273.5662 %2.868865.4565 %
Target2685.528564.7059 %7000085000000.25072.7159 %5.779265.6644 %
Difference-1-2.7725-0.5268 %+60000-6387500-0.1380+0.8503%-2.9104-0.2079 %

Known prime factors (1 factor, 69.3 bits, 0.00064308% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
107813697436771615645246518812169.33334488994930260
22 × 3 × 5 × 13 × 131 × 337531757
2015-10-1013133753175711.0738.710616.269

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2000-08-01ANONYMOUSv4_computers1300002112500--0.1133.189%


Trial Factoring results:
575859606162636465666768
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-11-24ANONYMOUSv4_computers212640.182
2013-12-10lycornManual testing2642650.347
2015-05-18ThaManual testing2652660.693


ECM factoring results:
Total ECM effort:0.497 GHz-days
Estimated T-Level:0.192
DigitsB1CompleteFacMiss
20110000.03896.227%
25500000.00499.645%


ECM Summary

B1B2factorcurvesGHz-days
50000500000010.497


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2001-01-21ANONYMOUSv4_computersAC6455080D0F02B43.522
2003-12-23Patrik Johanssonv4_computersAC6455080D0F02B43.522


PRP results:
dateuseridcompidcofactorsres64
2021-02-02mrhw
743677161564524651881
9F82C03D82973980


CERT results:
dateuseridcompid
2021-02-02Team_InspectorSpudBoy4


P-1 factor-bounds graph:
B1 = 130000, B2 = 2112500 (P-1 stage 2)
B1 = 130000 (P-1 stage 1)
101
102
103
104
105
106
101
102
103
104
105
106
107
108
109
TF factor-bounds graph:
266
265
264
this exponent TF target: 68
TF double-checked to: 67
ECM T-Level=0.19 ~= -16-bit
250
260
270
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Last modified: 2024-02-09T03:30:02+00:00