Use the form below to do your conversion.
Solution
Step1
Log217439=Log(7439) ÷ Log(21)
Log(7439)= 3.8715145587084
Log(21)=1.3222192947339
Log217439=3.8715145587084 ÷ 1.3222192947339
Ans=2.928042703754
Step2
Alternatively, the logarithm can be calculated like this.