What is a Logarithm?
The common or base-10 logarithm of a number is the power to which 10 must be raised to give the number.
Since 100 = 102, the logarithm of 100 is equal to 2. This is written as: Log(100) = 2.
1,000,000 = 106 (one million), and Log (1,000,000) = 6.