Of these, 45 is the only composite number. All the others are prime.
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 number and not a composite number.
49 is.
No 47 is a prime number so it is not a composite
47 is a prime number but 49 is a composite number
No, it is not a composite number, it's a prime number.
47 is a prime number
41 is a prime number.
41 is a prime number. It has no composite numbers as factors.
47 is a prime.
All of them except for 31, 37, 41, 43 and 47 which are prime numbers