4, 6, 8, 9, 10, 12, 14, 15
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1 is not composite or prime.
15 is composite.
2 is a prime number and 15 is a composite number.
There are 15 prime numbers and 34 composite numbers because 1 is not considered to be a prime or composite number
1, 3, 5, 9, 15, 45 Composite