4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 22, 24, 25, 26, 27, 28, 30
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The composite numbers between 2 and 30 are:
4 6 8 9 10 12 14 15 16 18 20 21 22 24 25 26 27 28 30
60 and 30
120.
Not all composite numbers are even, but all even numbers except 2 are composite.
A composite number is a number that has factors other than 1 and itself. Assuming that you are not including the numbers 25 and 35. Prime numbers are numbers whose only factors are itself and one, so if you find the prime factors of each number: 26 factors to 2, 13 27 factors to 3,3,3 28 factors to 2,2,7 29 prime 30 factors to 2, 3, 5 31 prime 32 factors to 2,2,2,2,2 33 factors to 3, 11 34 factors to 2, 17.
The composite factors of 30 are the numbers that can be multiplied together to give the product of 30. These factors include 1, 2, 3, 5, 6, 10, 15, and 30. Composite factors are different from prime factors, which are numbers that can only be multiplied by 1 and themselves to give the original number.