Use the form below to do your conversion.
Solution
Step1
Log1313991=Log(13991) ÷ Log(13)
Log(13991)= 4.1458487565905
Log(13)=1.1139433523068
Log1313991=4.1458487565905 ÷ 1.1139433523068
Ans=3.721777007785
Step2
Alternatively, the logarithm can be calculated like this.