What is the base and exponent for 121?

You can choose the base to be any number (other than 0, -1 and 1) and calculate the appropriate exponent, or you can choose any exponent and calculate the appropriate base.

For example, base 10: 121 = 10^2.08278537 (approx)

Or exponent = 10: 121 = 1.615394266^10 (approx).

I expect, though, that the answer that is required is 121 = 11^2.