Use the form below to do your conversion.
Solution
Step1
Log2015421=Log(15421) ÷ Log(20)
Log(15421)= 4.188112537165
Log(20)=1.301029995664
Log2015421=4.188112537165 ÷ 1.301029995664
Ans=3.2190745418038
Step2
Alternatively, the logarithm can be calculated like this.