Use the form below to do your conversion.
Solution
Step1
Log2013981=Log(13981) ÷ Log(20)
Log(13981)= 4.1455382357122
Log(20)=1.301029995664
Log2013981=4.1455382357122 ÷ 1.301029995664
Ans=3.1863510061477
Step2
Alternatively, the logarithm can be calculated like this.