Use the form below to do your conversion.
Solution
Step1
Log139911=Log(9911) ÷ Log(13)
Log(9911)= 3.9961174761373
Log(13)=1.1139433523068
Log139911=3.9961174761373 ÷ 1.1139433523068
Ans=3.5873614828455
Step2
Alternatively, the logarithm can be calculated like this.