Use the form below to do your conversion.
Solution
Step1
Log211391=Log(1391) ÷ Log(21)
Log(1391)= 3.143327129992
Log(21)=1.3222192947339
Log211391=3.143327129992 ÷ 1.3222192947339
Ans=2.3773114962935
Step2
Alternatively, the logarithm can be calculated like this.