Characteristic and Mantissa

Having given $\log 3=0.4771213$, find the number of digits in $3^{-65}$

Having given $\log 3=0.4771213$, find the number of digits in $3^{-43}$

Having given $\log 3=0.4771213$, find the number of digits in $3^{-13}$

Having given $\log 3=0.4771213$, find the number of digits in $3^{62}$

Having given $\log 3=0.4771213$, find the number of digits in $3^{27}$

Having given $\log 3=.4771213$, find the number of digits in $3^{43}$