is 2 4602863 - 1
has 1385600 decimal digits
takes 0.606 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L8B3FB053F09824B8double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual2676.455565.6716 %200001850000.00551.0689 %6.461166.0386 %
Target2651.585064.6154 %2800030000000.03632.1873 %1.621365.3893 %
Difference+2+4.8705+1.0563 %-8000-2815000-0.0307-1.1183 %+4.8398+0.6492 %

Known prime factors (1 factor, 76.8 bits, 0.00166911% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
46028631340196209028607959008872476.82714558289145566661
11 × 23 × 2729 × 61153 × 344801
2010-06-04611533448015,786.90.01460.0238

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2000-10-28ANONYMOUSv4_computers20000185000--0.0061.437%
2010-06-04markrtiny2476.8270.0400.000%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1998-03-09BJBv4_computers212600.017
1998-09-20ANONYMOUSv4_computers212610.033
1998-10-04BJBv4_computers212610.033


ECM factoring results:
Total ECM effort:0.395 GHz-days
Estimated T-Level:0.577
DigitsB1CompleteFacMiss
20110000.11589.102%
25500000.01198.938%


ECM Summary

B1B2factorcurvesGHz-days
50000500000030.395


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-01-10ANONYMOUSv4_computers5BB203AE5F7286010.606
2000-11-25ANONYMOUSv4_computers8B3FB053F09824B80.606


PRP results:
dateuseridcompidcofactorsres64
2017-09-20kkmrkkblmbrbkManual testing
134019620902860795900887
C6ED28DA6CA8B5A6
2018-02-27Oliver KruseGTX-5
134019620902860795900887
C6ED28DA6CA8B5A6


CERT results:
No CERT results for M4602863


P-1 factor-bounds graph:
B1 = 20000, B2 = 185000 (P-1 stage 2)
B1 = 20000 (P-1 stage 1)
103
104
105
103
104
105
106
TF factor-bounds graph:
261
260
this exponent TF target: 65
TF double-checked to: 67
ECM T-Level=0.58 ~= -15-bit
250
260
270
280
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Last modified: 2024-03-13T02:15:48+00:00