Use the form below to do your conversion.
Solution
Step1
Log215291=Log(5291) ÷ Log(21)
Log(5291)= 3.7235377615321
Log(21)=1.3222192947339
Log215291=3.7235377615321 ÷ 1.3222192947339
Ans=2.8161272312104
Step2
Alternatively, the logarithm can be calculated like this.