Use the form below to do your conversion.
Solution
Step1
Log25643=Log(643) ÷ Log(25)
Log(643)= 2.8082109729242
Log(25)=1.397940008672
Log25643=2.8082109729242 ÷ 1.397940008672
Ans=2.0088208045436
Step2
Alternatively, the logarithm can be calculated like this.