Prime Numbers and Factors

What are the factors of 12?

• 5, 10

• 2, 5, 10

• 1, 2, 3, 4, 6, 12

• 1, 2, 4, 8, 12

Determine if 17 is a prime number.

• No, 17 is not a prime number.

• Yes, 17 is a composite number.

• No, 17 is a perfect number.

• Yes, 17 is a prime number.

List the factors of 30.

• 2, 3, 5, 7, 11, 13, 17, 19

• 3, 5, 7, 9, 11, 13, 17, 19

• 1, 2, 4, 6, 8, 10, 12, 15

• The factors of 30 are 1, 2, 3, 5, 6, 10, 15, and 30.

Identify the prime numbers up to 50.

• 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30

• 1, 9, 15, 21, 25, 27, 33, 35, 39, 45, 49

• 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32

• 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47

Find the prime numbers between 1 and 30.

• 1, 4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 22, 24, 25, 26, 27, 28, 30

• 2, 3, 5, 7, 11, 13, 17, 19, 23, 29

• 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30

• 3, 6, 9, 12, 15, 18, 21, 24, 27, 30

Determine if 23 is a prime number.

• No, 23 is not a prime number.

• Yes, 23 is a composite number.

• Yes, 23 is a prime number.

• No, 23 is divisible by 3.

Identify the prime numbers up to 100.

• 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97

• 1, 4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 22, 24, 25, 26, 27, 28, 30, 32, 33, 34, 35, 36, 38, 39, 40, 42, 44, 45, 46, 48, 49, 50, 51, 52, 54, 55, 56, 57, 58, 60, 62, 63, 64, 65, 66, 68, 69, 70, 72, 74, 75, 76, 77, 78, 80, 81, 82, 84, 85, 86, 87, 88, 90, 91, 92, 93, 94, 95, 96, 98, 99, 100

• 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, 42, 45, 48, 51, 54, 57, 60, 63, 66, 69, 72, 75, 78, 81, 84, 87, 90, 93, 96, 99

• 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62, 64, 66, 68, 70, 72, 74, 76, 78, 80, 82, 84, 86, 88, 90, 92, 94, 96, 98, 100

Find the prime numbers between 30 and 50.

• 31, 33, 35, 37, 39, 41, 43, 45, 47, 49

• 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50

• 29, 31, 37, 41, 43, 47

• 29, 31, 33, 37, 39, 41, 43, 47, 49

Is 37 a prime number?

• No, 37 is not a prime number.

• Yes, 37 is a composite number.

• Yes, 37 is a prime number.

• No, 37 is divisible by 3.

List the factors of 42.

• 2, 3, 5, 7, 11, 13, 17, 19

• 3, 5, 7, 9, 11, 13, 17, 19

• 1, 2, 4, 6, 8, 10, 12, 15

• The factors of 42 are 1, 2, 3, 6, 7, 14, 21, and 42.