Use the form below to do your conversion.
Solution
Step1
Log256391=Log(6391) ÷ Log(25)
Log(6391)= 3.8055688175486
Log(25)=1.397940008672
Log256391=3.8055688175486 ÷ 1.397940008672
Ans=2.7222690487009
Step2
Alternatively, the logarithm can be calculated like this.