Answer:
39 is composite because you can divide it by 3, 13, 39
47 is prime because its only factors are 1 and itself
Explanation:
prime numbers: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97.
39 is composite
47 is prime
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