Multiple multiplying a number by itself is called exponentiation. If you use exponentiation, the exponent and the base are given the exponentiation value.
$b ...$ the base
$n ...$ the exponent
$x ...$ the exponentiation value
For example, $4^3$ equals multiplying $4\cdot4\cdot4$. In the example, $3$ is the exponent and $4$ is the base.
If a number is raised to the power of $1$, you can also omit the exponent: $b^1=b$
- $x\cdot x\cdot x \cdot x=x^4$