Use the form below to do your conversion.
Solution
Step1
Log217145=Log(7145) ÷ Log(21)
Log(7145)= 3.854002233127
Log(21)=1.3222192947339
Log217145=3.854002233127 ÷ 1.3222192947339
Ans=2.9147980584435
Step2
Alternatively, the logarithm can be calculated like this.