Composite means that it has smaller factors (other than 1), in this case, 2.
4 6 8
Any number that ends with 0, 2, 4, 6, or 8 is a multiple of 2.
prime
Composite.
Composite
It is composite.
5 is prime
Prime.
28 is composite.
Composite, yes.
because it is 1
it is a big triangle