Use the form below to do your conversion.
Solution
Step1
Log77991=Log(7991) ÷ Log(7)
Log(7991)= 3.9026011306665
Log(7)=0.84509804001426
Log77991=3.9026011306665 ÷ 0.84509804001426
Ans=4.6179270876083
Step2
Alternatively, the logarithm can be calculated like this.