Answer
$$e=2.718...$$
Work Step by Step
$5^{1/ln5} =5^{ln(e)/ln(5)} = 5^{log_5e} = e $
($ln(e) = 1$; $ln(a)/ln(b) = log_ba; a^{log_ab} = b$)
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.