Use the form below to do your conversion.
Solution
Step1
Log2013991=Log(13991) ÷ Log(20)
Log(13991)= 4.1458487565905
Log(20)=1.301029995664
Log2013991=4.1458487565905 ÷ 1.301029995664
Ans=3.18658967926
Step2
Alternatively, the logarithm can be calculated like this.