Use the form below to do your conversion.
Solution
Step1
Log213959=Log(3959) ÷ Log(21)
Log(3959)= 3.5975855017522
Log(21)=1.3222192947339
Log213959=3.5975855017522 ÷ 1.3222192947339
Ans=2.7208690087042
Step2
Alternatively, the logarithm can be calculated like this.