Use the form below to do your conversion.
Solution
Step1
Log213689=Log(3689) ÷ Log(21)
Log(3689)= 3.5669086552268
Log(21)=1.3222192947339
Log213689=3.5669086552268 ÷ 1.3222192947339
Ans=2.6976679809718
Step2
Alternatively, the logarithm can be calculated like this.