Use the form below to do your conversion.
Solution
Step1
Log83991=Log(3991) ÷ Log(8)
Log(3991)= 3.601081727784
Log(8)=0.90308998699194
Log83991=3.601081727784 ÷ 0.90308998699194
Ans=3.9875115211704
Step2
Alternatively, the logarithm can be calculated like this.