Use the form below to do your conversion.
Solution
Step1
Log2115991=Log(15991) ÷ Log(21)
Log(15991)= 4.2038756232773
Log(21)=1.3222192947339
Log2115991=4.2038756232773 ÷ 1.3222192947339
Ans=3.1794087713138
Step2
Alternatively, the logarithm can be calculated like this.