Exponents indicate how many times a number, known as the base, is used as a factor in a multiplication. The exponent is written as a small number to the right and above the base number. Examples show that 82 means 8 multiplied by itself 2 times and 53 means 5 multiplied by itself 3 times, with the exponent indicating the number of times the base is used as a factor.

1. Exponent
The exponent of a number says how many times to use that number in a
multiplication.
It is written as a small number to the right and above the base number.
In this example: 82 = 8 × 8 = 64
(The exponent "2" says to use the 8 two times in a multiplication.)
Another example: 53 = 5 × 5 × 5 = 125
(The exponent "3" says to use the 5 three times in a multiplication.)
Other names for exponent are index or power.