Use the form below to do your conversion.
Solution
Step1
Log15991=Log(991) ÷ Log(15)
Log(991)= 2.9960736544853
Log(15)=1.1760912590557
Log15991=2.9960736544853 ÷ 1.1760912590557
Ans=2.547483991073
Step2
Alternatively, the logarithm can be calculated like this.