What is arithmetic operator that raises to the power?

Answer 1

It is "raising to the power". Although repeated multiplication can be used for raising to a positive integer power

for example, a5 = a*a*a*a*a

that analogy fails for rational powers or irrational ones. And it is totally useless when the power is a complex number.

Answer 2

I would Say that the answer is the exponent

Answer 3

exponentiation