is 2 479 - 1
has 145 decimal digits
takes 0.000 GHz-days to do one PRP test
Has been fully factored.
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 PRP tests remaining
ResidueStatus
L-L-unknown--unknown-
PRPCD111B4588F56493PRP-tested
Cofactor is a certified prime

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actualunknown----0.00000.0000%
Target2440.004979.5455%500500000.00000.4730%0.004979.6422%
Difference-44-0.0049-79.5455%-500-500000.0000-0.4730%-0.0049-79.6422%

Known prime factors (4 factors, 479.0 bits, 100.00000000% known):
Remaining cofactor is a certified-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
47933385343824.99334849
34849		-1348497.200e-92.800e-85.227e-8
47962934430491032.5516569356
22 × 1642339		-416423392.316e-61.319e-62.464e-6
47968348144511804127828741612407372271116907030762777
7892361		57188.80171344618488313285833759511907486713065664959042565
5420
22 × 3 × 5 × 73 × 127 × 827 × 122288051993 × 124729093939 × 101677786809952602739823		-1247290939391016777868099526027398233.394e+148.166e+101.525e+11
479
hide decimal representation
10869186607773319558730501484452015470992764113369214593828236615596881
71232.655

4 Composite Factors:
P-1 results:
No P-1 results for M479


Trial Factoring results:
No TF results for M479


ECM factoring results:
No ECM results for M479


Lucas-Lehmer results:
No L-L results for M479


PRP results:
dateuseridcompidcofactorsres64PRP
2018-01-24Luke_Richardswork-laptopCD111B4588F56493no


P-1 factor-bounds graph:
100
101
102
103
104
105
106
107
108
109
1010
1011
1012
100
101
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1010
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1015
1016
1017
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1019
1020
1021
1022
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1024
TF factor-bounds graph:
this exponent TF target: 44
TF double-checked to: 67.9
250
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2100
2110
2120
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Last modified: 2023-10-02T12:12:48+00:00