Use the form below to do your conversion.
Solution
Step1
Log131985=Log(1985) ÷ Log(13)
Log(1985)= 3.2977605110991
Log(13)=1.1139433523068
Log131985=3.2977605110991 ÷ 1.1139433523068
Ans=2.9604382523311
Step2
Alternatively, the logarithm can be calculated like this.