Use the form below to do your conversion.
Solution
Step1
Log215389=Log(5389) ÷ Log(21)
Log(5389)= 3.731508183596
Log(21)=1.3222192947339
Log215389=3.731508183596 ÷ 1.3222192947339
Ans=2.8221552948575
Step2
Alternatively, the logarithm can be calculated like this.