93 = 3 x 31
31 47 67 are prime
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If you mean: 53 81 41 47 and 31 then 81 is a composite number while all the rest are prime numbers
31 and 47 are prime, the rest composite.
No 47 is a prime number so it is not a composite
141 is a composite because 1, 3, and 47 goes in it
All of them except for 31, 37, 41, 43 and 47 which are prime numbers.