is 2 13750567 - 1
has 4139334 decimal digits
takes 6.101 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
Actual2672.160964.1791 %15000001010774104.45539.5816 %6.616267.6113 %
Target2698.682365.2174 %90000110000000.44032.7901 %9.122666.1879 %
Difference-2-6.5214-1.0383 %+1410000+90077410+4.0150+6.7915%-2.5064+1.4234 %

Known prime factors (2 factors, 97.0 bits, 0.00070506% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
13750567904647877850631446.3623289493
3289493
-132894936.896e-70.11530.2153
1375056716920268776585431650.58861525713
3 × 23 × 891677
2014-06-03238916771.368e-50.03130.0584

1 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2022-08-09nordisweet16_30.8b14300000300000--0.2081.710%
2022-09-09nordisweet16_30.8b14300000213802050
skipped known factor: 90464787785063
skipped known factor: 1692026877658543
--9.857.476%
2022-10-02riccardo ubertiColab_noGPU141500000101077410
skipped known factor: 90464787785063
skipped known factor: 1692026877658543
--5.0368.148%


Trial Factoring results:
57585960616263646566676869
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2014-06-03TJAOIManual testing??
50.588
16


ECM factoring results:
Total ECM effort:14.104 GHz-days
Estimated T-Level:2.500
DigitsB1CompleteFacMiss
20110000.50060.653%
25500000.04895.284%
302500000.00399.688%


ECM Summary

B1B2factorcurvesGHz-days
50000144132451014.10


Lucas-Lehmer results:
No L-L results for M13750567


PRP results:
dateuseridcompidcofactorsres64
2022-10-01riccardo ubertiColab_noGPU12
90464787785063
1692026877658543
08E7CEF613666A10


CERT results:
dateuseridcompid
2022-10-01Team_InspectorFishbeck


P-1 factor-bounds graph:
B1 = 300000, B2 = 213802050 (P-1 stage 2)
B1 = 1500000, B2 = 101077410 (P-1 stage 2)
B1 = 1500000 (P-1 stage 1)
B1 = 300000 (P-1 stage 1)
100
101
102
103
104
105
106
107
100
101
102
103
104
105
106
107
108
109
TF factor-bounds graph:
this exponent TF target: 69
TF double-checked to: 67
ECM T-Level=2.5 ~= -8-bit
250
260
270
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Last modified: 2024-03-13T02:15:48+00:00