yes it is because only 1 and 27 go into it.
Actually, 3*9=27
Composite, yes.
Prime.
5 is a prime number.
47 is a prime number.
29 is a prime number.
because it is 1
91 is composite.
25 is a Composite Number.
67 is a prime number.
89 is a prime number.
6 is a composite number, since its factor are 1,2,3.
No, but it is composite.