Use the form below to do your conversion.
Solution
Step1
Log215689=Log(5689) ÷ Log(21)
Log(5689)= 3.7550359337678
Log(21)=1.3222192947339
Log215689=3.7550359337678 ÷ 1.3222192947339
Ans=2.8399494310234
Step2
Alternatively, the logarithm can be calculated like this.