It is the forth Prime number. Whenever you wanted to know a number is prime or composite, use this site. It must be usefull: prime-calculator dot com. It has lots of other abilities. Enjoy it.
57 is a prime number. A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite.
It is composite.
It is prime
86 is not a prime number, so is a composite.
No 168 is not a prime number it is a composite number
composite.
No, it is composite.
No, it's prime.
Yes.
57 is a prime number. A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite.
It is composite.
No. 5 and 7 are both prime numbers.
It is not a prime number, it is a composite number.
It is prime
Yes except 7 itself which is a prime number
27 is not a prime number because it has more than two factors and so therefore it is a composite number
86 is not a prime number, so is a composite.