Use the form below to do your conversion.
Solution
Step1
Log213895=Log(3895) ÷ Log(21)
Log(3895)= 3.5905074620086
Log(21)=1.3222192947339
Log213895=3.5905074620086 ÷ 1.3222192947339
Ans=2.71551585755
Step2
Alternatively, the logarithm can be calculated like this.