is 2 4768609 - 1
has 1435495 decimal digits
takes 0.628 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual2676.231165.6716 %240000919917601.00026.8737 %7.231368.0313 %
Target2651.529964.6154 %3000032500000.03922.2841 %1.569265.4236 %
Difference+2+4.7012+1.0563 %+210000+88741760+0.9610+4.5896%+5.6622+2.6077 %

Known prime factors (1 factor, 39.4 bits, 0.00082570% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
47686097126876894871239.37474727
32 × 192 × 23
-3613611.804e-86.892e-50.0001

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2023-10-10USAFSSUSAFSACS24000091991760
skipped known factor: 712687689487
--1.0008.286%


Trial Factoring results:
5758596061626364656667
No TF results for M4768609


ECM factoring results:
Total ECM effort:0.594 GHz-days
Estimated T-Level:0.577
DigitsB1CompleteFacMiss
20110000.11589.102%
25500000.01198.938%


ECM Summary

B1B2factorcurvesGHz-days
50000500000030.594


Lucas-Lehmer results:
No L-L results for M4768609


PRP results:
dateuseridcompidcofactorsres64
2017-09-20kkmrkkblmbrbkManual testing
712687689487
B97458BA9ADDA2D0
2018-03-19MrSupp_CZNRV_1
712687689487
B97458BA9ADDA2D0


CERT results:
No CERT results for M4768609


P-1 factor-bounds graph:
B1 = 240000, B2 = 91991760 (P-1 stage 2)
B1 = 240000 (P-1 stage 1)
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105
106
101
102
103
104
105
106
107
108
TF factor-bounds graph:
this exponent TF target: 65
TF double-checked to: 67
ECM T-Level=0.58 ~= -15-bit
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Last modified: 2024-03-13T02:15:48+00:00