A prime number is a positive integer greater than 1 that has no positive divisors other than 1 and itself. In other words, it is a number that cannot be divided evenly by any other number except 1 and itself, without leaving a remainder.

Here are a few examples of prime numbers:

• 2 is the smallest prime number.
• 3, 5, 7, and 11 are prime numbers.
• 13, 17, 19, and 23 are also prime numbers.