Use the form below to do your conversion.
Solution
Step1
Log215717=Log(5717) ÷ Log(21)
Log(5717)= 3.7571681922143
Log(21)=1.3222192947339
Log215717=3.7571681922143 ÷ 1.3222192947339
Ans=2.8415620670324
Step2
Alternatively, the logarithm can be calculated like this.