How is a prime number defined?

A prime number is defined as a natural number greater than one that has no positive divisors other than one and itself. This means that a prime number can only be divided evenly (without leaving a remainder) by the number one and the number itself. This definition distinguishes prime numbers from composite numbers, which have more than two positive divisors. For example, the number 5 is prime because the only factors are 1 and 5, whereas the number 6 is not prime because it has factors of 1, 2, 3, and 6. This criterion of divisibility by only two distinct positive numbers is what identifies a number as prime. Therefore, the choice that describes this specific definition accurately is the one that states the condition of divisibility by only itself and one.