Answer
$71$
Work Step by Step
RECALL:
For any real numbers $n$ and $a\gt 0, a\ne1$,
$\log_a{(a^n)} = n$
Use the rule above to obtain:
$\log_3{(3^{71})} = 71$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.