What do you call a whole number that has exactly two factors, 1 and itself?

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Multiple Choice

What do you call a whole number that has exactly two factors, 1 and itself?

Explanation:
A whole number that has exactly two factors, 1 and itself, is called a prime number. This means you can’t break it into a product of two smaller whole numbers besides 1 and the number itself. For example, 2, 3, 5, and 7 only have 1 and themselves as factors. In contrast, a composite number has more than two factors (like 4, which has 1, 2, and 4). A natural number is any positive counting number, including 1, but 1 isn’t prime because it has only one factor. So the described property points to prime numbers.

A whole number that has exactly two factors, 1 and itself, is called a prime number. This means you can’t break it into a product of two smaller whole numbers besides 1 and the number itself. For example, 2, 3, 5, and 7 only have 1 and themselves as factors. In contrast, a composite number has more than two factors (like 4, which has 1, 2, and 4). A natural number is any positive counting number, including 1, but 1 isn’t prime because it has only one factor. So the described property points to prime numbers.

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