What is the base value of the natural logarithm?

Napier's constant
10
number π
2
The natural logarithm of a number is its logarithm to the base of the mathematical constant e (Euler's number), occasionally referred to as Napier's constant. The common logarithm is the logarithm with base 10, while the binary logarithm is the logarithm with base 2.
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Napier's constant
10
number π
2
answers
flagSwitzerland
83%
8%
8%
0%
12
flagPoland
36%
26%
21%
15%
952
flagUnknown
35%
35%
11%
17%
81
flagthe United Kingdom
25%
25%
31%
18%
16
flagGermany
10%
30%
30%
30%
10