Use the form below to do your conversion.
Solution
Step1
Log139905=Log(9905) ÷ Log(13)
Log(9905)= 3.9958544798746
Log(13)=1.1139433523068
Log139905=3.9958544798746 ÷ 1.1139433523068
Ans=3.5871253880187
Step2
Alternatively, the logarithm can be calculated like this.