WelI I don't know. Let's see.
Every number has 2 factors . . . itself and 1 .
If those are the only factors it has, then it's a prime number.
If it has any other factors besides those, then it's a composite number.
The factors of 750 are
1, 2, 3, 5, 6, 10, 15, 25, 30, 50, 75, 125, 150, 250, 375, and 750.
Besides itself and 1, it has 14 other factors.
So I guess 750 must be a composite number.