is 2 4635149 - 1
has 1395319 decimal digits
takes 0.610 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L8000F1E7C3E11113double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual2676.410665.6716 %2400001190487901.28167.1000 %7.692268.1090 %
Target2651.574064.6154 %2800030000000.03632.1899 %1.610365.3903 %
Difference+2+4.8366+1.0563 %+212000+116048790+1.2454+4.9101%+6.0819+2.7187 %

Known prime factors (1 factor, 78.6 bits, 0.00169582% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
46351494593478847035388791855672478.60449550498236792267
11 × 13 × 853 × 1153 × 352317041
2010-05-13115335231704113,2073.66496.8446

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2001-09-30ANONYMOUSv4_computers25000243750--0.0071.658%
2023-03-16USAFSS6917th_Scty_Sq240000119048790--1.5378.546%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2002-08-24David Campeauv4_computers212610.033


ECM factoring results:
Total ECM effort:0.395 GHz-days
DigitsB1CompleteFacMiss


ECM Summary

B1B2factorcurvesGHz-days
10.395


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2001-11-04ANONYMOUSv4_computers8000F1E7C3E111130.610


PRP results:
dateuseridcompidcofactorsres64
2017-09-20kkmrkkblmbrbkManual testing
459347884703538879185567
61CB069B4A3F5839
2018-03-02Chang Chia-Tcheex01
459347884703538879185567
61CB069B4A3F5839


CERT results:
No CERT results for M4635149


P-1 factor-bounds graph:
B1 = 240000, B2 = 119048790 (P-1 stage 2)
B1 = 240000 (P-1 stage 1)
B1 = 25000, B2 = 243750 (P-1 stage 2)
B1 = 25000 (P-1 stage 1)
102
103
104
105
106
102
103
104
105
106
107
108
109
TF factor-bounds graph:
261
this exponent TF target: 65
TF double-checked to: 67
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Last modified: 2024-02-09T03:30:02+00:00