is 2 20083519 - 1
has 6045742 decimal digits
takes 14.233 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
Actual2671.479562.6866 %----1.479562.6866 %
Target2695.944563.7681 %140000200000001.25573.6296 %7.200365.0832 %
Difference-2-4.4650-1.0815 %-140000-20000000-1.2557-3.6296 %-5.7207-2.3966 %

Known prime factors (3 factors, 152.7 bits, 0.00076020% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
200835191279320160311236.8973185
5 × 72 × 13
2011-06-1549497.701e-105.035e-50.0001
200835195216347017041691548.89012986636
22 × 132 × 19211
2011-06-15169192113.660e-60.00120.0020
200835191366446213580182928792166.8893401909330681
61 × 359 × 7927 × 19597
2020-11-197927195971.45710.00880.0166

4 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2011-06-15AxonManual testing2685.7870.9410.000%


Trial Factoring results:
57585960616263646566676869
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2020-11-19TJAOIManual testing266267*
66.889
21
0.662


ECM factoring results:
No ECM results for M20083519


Lucas-Lehmer results:
No L-L results for M20083519


PRP results:
No PRP results for M20083519


CERT results:
No CERT results for M20083519


P-1 factor-bounds graph:
100
101
102
103
104
100
101
102
103
104
105
TF factor-bounds graph:
this exponent TF target: 69
TF double-checked to: 67
250
260
270
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Last modified: 2024-03-13T02:15:48+00:00