# Prime And Composite

Name: ____________________________________
Prime and Composite
Factors are the numbers you multiply to get another number.
2 x 3 = 6
2 and 3 are factors of 6.
1 x 6 = 6
1 and 6 are also factors of 6.
What are the factors of 6?
1, 2, 3, and 6
Prime numbers are the numbers that have only two factors.
1 x 19 = 19 1 and 19 are the only factors of 19.
Because 19 has only two factors, it is a prime number.
Composite numbers are the numbers that have more than two factors.
1 x 10 = 10 1 and 10 are factors of 10.
2 x 5 = 10
2 and 5 are also factors of 10.
What are the factors of 10?
1, 2, 5, and 10
Because 10 has more than two factors, it is a composite number.
a.
List all of the factors for the number 4.
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Is 4 a prime or composite number?
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b.
List all of the factors for the number 11.
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Is 11 a prime or composite number?
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c.
List all of the factors for the number 16.
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Is 16 a prime or composite number?
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d.
List all of the factors for the number 23.
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Is 23 a prime or composite number?
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