You can use text to indicate raising a power through several means, depending on context. I will use "raise x to the power of y" as the example throughout this answer:
A protractor will indicate an angle that has to be made.
M is often used to indicate one thousand, and MM is used to indicate one million - both are Roman numerals. It is more likely that 1k is used to indicate one thousand nowadays.
Normally it is = which is an equality sign
Latitude and Longitude :)
You indicate it with a superscript on the number. For example, a to the third power is a3
Exponent is the mathematical expression used to indicate the operation of raising a power Examples: 7 x 7 x 7= 7 cubed
A device used to indicate instantaneous power usage.
The term used to indicate that those in power are not above the law is rule of the law. This is considered to nomocracy where the law is the superior governing authority in a nation.
indicate the legal power to give consent
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.