Use the form below to do your conversion.
Solution
Step1
Log257139=Log(7139) ÷ Log(25)
Log(7139)= 3.8536373819586
Log(25)=1.397940008672
Log257139=3.8536373819586 ÷ 1.397940008672
Ans=2.7566543328417
Step2
Alternatively, the logarithm can be calculated like this.