Use the form below to do your conversion.
Solution
Step1
Log25139=Log(139) ÷ Log(25)
Log(139)= 2.1430148002541
Log(25)=1.397940008672
Log25139=2.1430148002541 ÷ 1.397940008672
Ans=1.5329805191639
Step2
Alternatively, the logarithm can be calculated like this.