Table of logarithms
Table of base 10,
base 2 and base e (ln) logarithms:
|
x
|
log10 x
|
log2 x
|
loge x
|
|
0
|
undefined
|
undefined
|
undefined
|
|
0+
|
- ∞
|
- ∞
|
- ∞
|
|
0.0001
|
-4.000000
|
-13.287712
|
-9.210340
|
|
0.001
|
-3.000000
|
-9.965784
|
-6.907755
|
|
0.01
|
-2.000000
|
-6.643856
|
-4.605170
|
|
0.1
|
-1.000000
|
-3.321928
|
-2.302585
|
|
1
|
0.000000
|
0.000000
|
0.000000
|
|
2
|
0.301030
|
1.000000
|
0.693147
|
|
3
|
0.477121
|
1.584963
|
1.098612
|
|
4
|
0.602060
|
2.000000
|
1.386294
|
|
5
|
0.698970
|
2.321928
|
1.609438
|
|
6
|
0.778151
|
2.584963
|
1.791759
|
|
7
|
0.845098
|
2.807355
|
1.945910
|
|
8
|
0.903090
|
3.000000
|
2.079442
|
|
9
|
0.954243
|
3.169925
|
2.197225
|
|
10
|
1.000000
|
3.321928
|
2.302585
|
|
20
|
1.301030
|
4.321928
|
2.995732
|
|
30
|
1.477121
|
4.906891
|
3.401197
|
|
40
|
1.602060
|
5.321928
|
3.688879
|
|
50
|
1.698970
|
5.643856
|
3.912023
|
|
60
|
1.778151
|
5.906991
|
4.094345
|
|
70
|
1.845098
|
6.129283
|
4.248495
|
|
80
|
1.903090
|
6.321928
|
4.382027
|
|
90
|
1.954243
|
6.491853
|
4.499810
|
|
100
|
2.000000
|
6.643856
|
4.605170
|
|
200
|
2.301030
|
7.643856
|
5.298317
|
|
300
|
2.477121
|
8.228819
|
5.703782
|
|
400
|
2.602060
|
8.643856
|
5.991465
|
|
500
|
2.698970
|
8.965784
|
6.214608
|
|
600
|
2.778151
|
9.228819
|
6.396930
|
|
700
|
2.845098
|
9.451211
|
6.551080
|
|
800
|
2.903090
|
9.643856
|
6.684612
|
|
900
|
2.954243
|
9.813781
|
6.802395
|
|
1000
|
3.000000
|
9.965784
|
6.907755
|
|
10000
|
4.000000
|
13.287712
|
9.210340
|
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