M to the n power. According to the mathematical encyclopedia, an n in the upper right corner of m represents the n power of m, that is, m times of n. The most basic definition of power is to let a be any number, n be a positive integer, and the n power of a represents the result of continuous multiplication of n A. The definition of power can also be extended to the 0 th power, negative power, decimal power, irrational power or even imaginary power.