Prime vs. Composite Numbers

Mr. Atit introduces the concept of factors using the number 24, explaining how different pairs of numbers can multiply to achieve a product. He then transitions to prime numbers, defining them as numbers with only two distinct factors: one and itself. Examples of prime numbers like 17, 29, and 41 are provided. The video also clarifies that the number one is not a prime number. The concept of composite numbers is introduced, defined as numbers with more than two factors. The video concludes with a method to identify prime and composite numbers, emphasizing that the only even prime number is 2.

Which of the following pairs are factors of 24?

• 5 and 5

• 2 and 13

• 1 and 24

• 3 and 9

What is a prime number?

• A number with exactly two distinct factors

• A number with only one factor

• A number with more than two factors

• A number that is even

Which of the following is a prime number?

• 18

• 29

• 36

• 40

What makes a number composite?

• It is an odd number

• It has only one factor

• It has exactly two factors

• It has more than two factors

Which of the following numbers is composite?

• 2

• 3

• 4

• 5

How can you determine if a number is composite?

• Check if it is a multiple of 10

• Check if it is odd

• Check if it is even

• Check if it has more than two factors

What is the only even prime number?

• 4

• 1

• 2

• 0