Use the form below to do your conversion.
Solution
Step1
Log138509=Log(8509) ÷ Log(13)
Log(8509)= 3.9298785236568
Log(13)=1.1139433523068
Log138509=3.9298785236568 ÷ 1.1139433523068
Ans=3.5278979990486
Step2
Alternatively, the logarithm can be calculated like this.