Prime and Composite

     Prime and Composite 

Factors are the numbers you multiply to get another number. 

Prime numbers are the numbers that have only two factors. 

What are the factors of 3? 1 and 3 Because 3 has only two factors, it is a prime number. 

Composite numbers are the numbers that have more than two factors. 

What are the factors of 6? 1, 2, 3, and 6 Because 6 has more than two factors, it is a composite number. 

Complete the table: 

Number	Prime or composite	Factors
10	composite	1,2,5,10
5	composite	1,5,
12	composite	1,2,3,4,6,12
18	composite	1,2,3,6,9, 18
4	composite	1,2,4
11	Prime	1, 11
24	composite	1, 2,6,8, 12, 24
97	Prime	1, 97
73	Prime	1, 73
33	composite	1, 11,33
21	composite	1, 3, 7, 21

we have been learning about prime numbers and prime numbers are that you times by itself and 1