Use the form below to do your conversion.
Solution
Step1
Log213979=Log(3979) ÷ Log(21)
Log(3979)= 3.5997739391464
Log(21)=1.3222192947339
Log213979=3.5997739391464 ÷ 1.3222192947339
Ans=2.722524133087
Step2
Alternatively, the logarithm can be calculated like this.