is 2 4809781 - 1
has 1447889 decimal digits
takes 0.633 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
-unknown- primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2676.177865.6716%----6.177865.6716%0.0000%
PrimeNet2610.063962.2951%200004500000.00833.2258%0.072263.5114%1.2163%
GPU722651.516864.6154%320006500000.01252.3230%1.529465.4374%0.8220%
Difference+2+4.6610+1.0563%-32000-650000-0.0125-2.3230%+4.6484+0.2343%+0.2343%

Known prime factors (2 factors, 107.6 bits, 0.00223680% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
48097813174455460011238.20833000
23 × 3 × 53 × 11
-1251258.701e-92.386e-54.857e-5
48097817667024619499179718972169.37779702429481708
22 × 11 × 1811418851857
2019-06-0511181141885185747.78618,84235,191

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
480978124338628165400263770600573873389733107.585
P-1 results:
No P-1 results for M4809781


Trial Factoring results:
No TF results for M4809781


ECM factoring results:

Old Calculation Method

Total ECM effort:0.198 GHz-days
Estimated T-Level:0.050
DigitsB1CurvesCompleteFacMiss
20110001 / 1000.01099.000%
25500001 / 2800.00499.643%

New Calculation Method

Total ECM effort:0.198 GHz-days
Estimated T-Level:0.050
DigitsB1CompleteFacMiss
20110000.03896.227%
25500000.00499.645%


ECM Summary

B1B2factorcurvesGHz-days
50000500000010.198


Lucas-Lehmer results:
No L-L results for M4809781


PRP results:
dateuseridcompidcofactorsres64PRP
2017-11-20T16:02:42Oliver KruseGTX-0
317445546001
20718DF47E1589__no
2018-01-07T03:48:23kkmrkkblmbrbkc4.xlarge
317445546001
20718DF47E1589__no
2019-06-08T05:07:56Daniil Tsarkovtsar1
317445546001
766702461949917971897
20718DF47E15897Bno


P-1 factor-bounds graph:
100
101
102
103
100
101
102
103
104
105
106
107
108
109
1010
1011
1012
1013
TF factor-bounds graph:
267
230
240
250
260
270
280
290
2100
Last modified: 2019-06-08T05:07:56+00:00