I am a number that tells how many times the base is used as a factor.

An exponent is a number written as a power of a number and is equal to the number of times the base number is to multiplied by itself. 

Answer: An exponent is a number that tells how many times the base is used as a factor.

Let us proceed step by step.

Explanation:

As we know that an exponent is defined as how many times the number is multiplied by itself. 

Let us understand this with an example,

3 × 3 × 3 × 3 can be written as 3⁴, as 3 is multiplied by itself 4 times.

Here, 3 is called the "base" and 4 is called the "exponent" or power.

Hence, the exponent is a number that tells how many times the base is used as a factor.