is 2 20357399 - 1
has 6128188 decimal digits
takes 14.427 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
Actual2671.459662.6866 %----1.459662.6866 %
Target2695.864563.7681 %150000225000001.40543.7678 %7.270065.1333 %
Difference-2-4.4049-1.0815 %-150000-22500000-1.4054-3.7678 %-5.8103-2.4467 %

Known prime factors (3 factors, 108.5 bits, 0.00053292% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
2035739940714799825.2791
1
2011-06-16112.196e-131.028e-62.091e-6
20357399150237604631133.807369
32 × 41
2008-09-089416.070e-111.104e-51.882e-5
203573997441192827304331549.40318276384
25 × 3 × 7 × 27197
2011-06-1632271977.100e-60.00160.0028

4 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2011-06-16AxonManual testing33108.4880.9410.000%


Trial Factoring results:
57585960616263646566676869
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2008-09-08Will EdgingtonManual testing??
33.807
11


ECM factoring results:
No ECM results for M20357399


Lucas-Lehmer results:
No L-L results for M20357399


PRP results:
No PRP results for M20357399


CERT results:
No CERT results for M20357399


P-1 factor-bounds graph:
100
101
102
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