exponent
The small raised number telling you how many times to multiply a number by itself.
In a^n, the exponent (or power) n tells you how many times the base a multiplies itself. a^n = \underbrace{a \times a \times \cdots \times a}_{n \text{ times}} for a positive whole number n.
Examples
2^3 = 2 \times 2 \times 2 = 8 — the exponent 3 says "multiply three 2's together."
See also
Point table
Graph settings
Calculator