Use the form below to do your conversion.
Solution
Step1
Log213943=Log(3943) ÷ Log(21)
Log(3943)= 3.5958267770732
Log(21)=1.3222192947339
Log213943=3.5958267770732 ÷ 1.3222192947339
Ans=2.7195388778507
Step2
Alternatively, the logarithm can be calculated like this.