Use the form below to do your conversion.
Solution
Step1
Log31991=Log(1991) ÷ Log(3)
Log(1991)= 3.2990712600274
Log(3)=0.47712125471966
Log31991=3.2990712600274 ÷ 0.47712125471966
Ans=6.9145342560055
Step2
Alternatively, the logarithm can be calculated like this.