Exponent

An exponent tells you the number of times the base appears as a factor. exponentiation.

For example: The exponent in $2\cdot2\cdot2$ is 3. This can also be written as $2^3$. The exponent in $4\cdot4\cdot4\cdot4\cdot4$ is 5. This can also be written as $4^5$.

Exponents are used in algebra.

It is a number or symbol, placed above and to the right of the expression to which it applies, that indicates the number of times the expression is used as a factor. For example, the exponent 3 in $5^3$ indicates $5 \cdot 5 \cdot 5$; the exponent x in $(a + b)^x$ indicates $(a + b)$ multiplied by itself x times.