Prime Factorization and Number Properties

The video tutorial explains the concept of prime factorization using factor trees. It demonstrates the prime factorization of the numbers 9 and 21. For 9, the factorization is 3 times 3, and for 21, it is 3 times 7. The video concludes with a request to subscribe to the channel for daily math and science videos.

What is the prime factorization of 9?

• 1 x 9

• 3 x 2

• 2 x 4

• 3 x 3

Which of the following numbers is a prime factor of 9?

• 6

• 3

• 4

• 2

What is the prime factorization of 21?

• 2 x 11

• 6 x 3

• 5 x 4

• 3 x 7

Which of the following pairs of numbers are both prime factors of 21?

• 6 and 3

• 3 and 7

• 5 and 4

• 2 and 11

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