Use the form below to do your conversion.
Solution
Step1
Log213917=Log(3917) ÷ Log(21)
Log(3917)= 3.5929535715479
Log(21)=1.3222192947339
Log213917=3.5929535715479 ÷ 1.3222192947339
Ans=2.7173658604573
Step2
Alternatively, the logarithm can be calculated like this.