Use the form below to do your conversion.
Solution
Step1
Log138405=Log(8405) ÷ Log(13)
Log(8405)= 3.9245377177755
Log(13)=1.1139433523068
Log138405=3.9245377177755 ÷ 1.1139433523068
Ans=3.5231034950281
Step2
Alternatively, the logarithm can be calculated like this.