yes it is because only 1 and 27 go into it.
Actually, 3*9=27
Prime.
Composite, yes.
47 is a prime number.
5 is a prime number.
because it is 1
29 is a prime number.
89 is a prime number.
25 is a Composite Number.
91 is composite.
67 is a prime number.
6 is a composite number, since its factor are 1,2,3.
Composite Lolz Rofl!