Use the form below to do your conversion.
Solution
Step1
Log1513991=Log(13991) ÷ Log(15)
Log(13991)= 4.1458487565905
Log(15)=1.1760912590557
Log1513991=4.1458487565905 ÷ 1.1760912590557
Ans=3.5251080429927
Step2
Alternatively, the logarithm can be calculated like this.