32, 9, 18, 51
47, 29 & 37 are prime numbers while 49 is a composite number.
Prime, composite, prime.
27
Of the numbers in your question, three are prime, and one is composite. The three prime numbers are 13, 37, and 101, and the composite number is 91. 91 is equal to 13 x 7.
32, 9, 18, 51
37 is prime, the other is composite.
37 is a prime number and 358 is a composite number
The prime numbers are 19, 29, 31, and 37. The composite number is 35.
47, 29 & 37 are prime numbers while 49 is a composite number.
Prime, composite, prime.
31, 37, & 41 are prime; 32,33,34,35,36,38,39 & 40 are composite.
37 has two factors, 1 and 37. 37 is prime. 1 is neither.
The composite numbers in that list are 22 and 36 - you know they are composite, because they are even numbers. The other numbers are odd and prime.
42
27
27, 57 and 77 are composite.