prime: 31, 37, 41, 43, 47
composite: the others
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All of them except 23 and 29 which are prime numbers
The only prime number in that range is 29. All others are composite.
30 and 135 are composite numbers. A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite.
Prime numbers: 11, 13, 17, 19, 23, 29 Composite numbers: 10, 12, 14, 15, 16, 18, 20, 21, 22, 24, 25, 26, 27, 28, 30
A composite number can be expressed as the product of two or more prime numbers. For example, 30 (composite) is 2 x 3 x 5 [2, 3 and 5 are prime] A prime number cannot be expressed as the product of other numbers. By convention the numbers zero and 1 are neither prime nor composite.