Use the form below to do your conversion.
Solution
Step1
Log159991=Log(9991) ÷ Log(15)
Log(9991)= 3.9996089589714
Log(15)=1.1760912590557
Log159991=3.9996089589714 ÷ 1.1760912590557
Ans=3.4007641228308
Step2
Alternatively, the logarithm can be calculated like this.