Use the form below to do your conversion.
Solution
Step1
Log215131=Log(5131) ÷ Log(21)
Log(5131)= 3.7102020146554
Log(21)=1.3222192947339
Log215131=3.7102020146554 ÷ 1.3222192947339
Ans=2.8060413498973
Step2
Alternatively, the logarithm can be calculated like this.