Use the form below to do your conversion.
Solution
Step1
Log43991=Log(3991) ÷ Log(4)
Log(3991)= 3.601081727784
Log(4)=0.60205999132796
Log43991=3.601081727784 ÷ 0.60205999132796
Ans=5.9812672817556
Step2
Alternatively, the logarithm can be calculated like this.