Use the form below to do your conversion.
Solution
Step1
Log139989=Log(9989) ÷ Log(13)
Log(9989)= 3.9995220131289
Log(13)=1.1139433523068
Log139989=3.9995220131289 ÷ 1.1139433523068
Ans=3.5904177755955
Step2
Alternatively, the logarithm can be calculated like this.