Prime Numbers and Composite Numbers

What are prime numbers?

Prime numbers are natural numbers that have exactly two distinct positive factors: 1 and the number itself. For example, 7 is a prime number because its only factors are 1 and 7.

Is the number 1 a prime number? Why or why not?

No, the number 1 is not a prime number because it only has one factor: itself (1). A prime number must have exactly two distinct factors.

How can you tell if a number is a prime number?

To determine if a number is a prime number, check if it has only two positive divisors: 1 and itself. If any other number divides it evenly, then it is not prime.

List the first 5 prime numbers.

The first 5 prime numbers are 2, 3, 5, 7, 11.

What are composite numbers?

Composite numbers are natural numbers that have more than two factors. This means they can be divided by 1, themselves, and at least one other number.

List some examples of composite numbers.

Some examples of composite numbers are 4, 6, 8, 9, 10, 12, 14, 15, 16, etc.