Prime Factorization and Factors of Numbers

The video tutorial from Moomoomath and Science covers the factors of 137 and 138. It begins by explaining that 137 is a prime number with factors 1 and 137. The video then explores the factors of 138, listing them as 1, 2, 3, 6, 23, 46, 69, and 138. A factor tree is constructed to demonstrate the prime factorization of 138, which is 2 x 3 x 23. The video concludes with a reminder to subscribe to the channel for daily math and science content.

What are the factors of a prime number like 137?

• 1, 2, 3, and 4

• 1, 2, and 3

• 1 and 2

• 1 and the number itself

Tags

CCSS.4.OA.B.4

Which of the following is NOT a factor of 138?

• 23

• 69

• 46

• 50

Tags

CCSS.4.OA.B.4

How many factors does the number 138 have?

• 8

• 6

• 10

• 4

What is the first step in the prime factorization of 138?

• Divide by 5

• Divide by 7

• Divide by 3

• Divide by 2

Tags

CCSS.4.OA.B.4

Which of the following is a prime factor of 138?

• 46

• 23

• 6

• 4

What is the complete prime factorization of 138?

• 3 x 3 x 23

• 2 x 5 x 23

• 2 x 3 x 11

• 2 x 3 x 23