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