Use the form below to do your conversion.
Solution
Step1
Log31391=Log(391) ÷ Log(31)
Log(391)= 2.5921767573959
Log(31)=1.4913616938343
Log31391=2.5921767573959 ÷ 1.4913616938343
Ans=1.7381274898723
Step2
Alternatively, the logarithm can be calculated like this.