Use the form below to do your conversion.
Solution
Step1
Log2113405=Log(13405) ÷ Log(21)
Log(13405)= 4.1272668183189
Log(21)=1.3222192947339
Log2113405=4.1272668183189 ÷ 1.3222192947339
Ans=3.1214692107102
Step2
Alternatively, the logarithm can be calculated like this.