Use the form below to do your conversion.
Solution
Step1
Log21791=Log(791) ÷ Log(21)
Log(791)= 2.8981764834977
Log(21)=1.3222192947339
Log21791=2.8981764834977 ÷ 1.3222192947339
Ans=2.1919030338163
Step2
Alternatively, the logarithm can be calculated like this.