is 2 1357429 - 1
has 408627 decimal digits
takes 0.052 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
Actual26721.889968.6567 %500000150000000.07144.8889 %21.961370.1891 %
Target2600.113165.0000 %55002000000.00090.9829 %0.114065.3440 %
Difference+7+21.7767+3.6567 %+494500+14800000+0.0705+3.9061%+21.8472+4.8451 %

Known prime factors (2 factors, 103.6 bits, 0.00762976% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1357429521252737928.957192
26 × 3
-64642.744e-113.543e-67.211e-6
1357429288532066938089684648572374.61110627887975654332
22 × 587 × 323009 × 14013101
2015-01-27323009140131012,911.20.05920.0789

1 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2015-01-28alpertronManual testing500000150000001222374.6110.0849.377%


Trial Factoring results:
5758596061626364656667
No TF results for M1357429


ECM factoring results:
Total ECM effort:29.465 GHz-days
Estimated T-Level:25.704
DigitsB1CompleteFacMiss
201100014.6540.000%
25500001.65119.189%
302500000.14186.866%
3510000000.01099.021%


ECM Summary

B1B2factorcurvesGHz-days
50000500000025113.70
250000350000005015.77


Lucas-Lehmer results:
No L-L results for M1357429


PRP results:
dateuseridcompidcofactorsres64
2017-09-30Oliver KruseGTX-1
521252737
28853206693808968464857
99AEC179018A2B8D
2017-10-24kkmrkkblmbrbkc4.xlarge
521252737
28853206693808968464857
99AEC179018A2B8D


CERT results:
No CERT results for M1357429


P-1 factor-bounds graph:
B1 = 500000, B2 = 15000000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
100
101
102
103
104
105
106
100
101
102
103
104
105
106
107
108
TF factor-bounds graph:
this exponent TF target: 60
TF double-checked to: 67
ECM T-Level=25.7 ~= 69-bit
250
260
270
280
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Last modified: 2024-03-13T02:15:48+00:00