Returns the logarithm of the number using the specified base, which is the power that base must be raised to, to equal the number.

**log**( *number*, *base* )

*number*: (Decimal) A number, the logarithm of which will be returned.

*base*: (Decimal) The base to use in the logarithm calculation. 10 and e are common values for the base.

Decimal

You can experiment with this function in the test box below.

Test Input

`log(8,2)`

returns `3`

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