1, 2, 4, 8, 16
15 and 16 are both composite numbers
4, 8 and 16
16 is a composite number. All even numbers greater than 2 are composites.
16, 18, 20, 21, 22, 24, 25, 26, 27, 28, 30,
No, the factors of 16 are 1, 2, 4, 8, and 16. It is a composite number. All even numbers except 2 are composite numbers because they can be divided by 2.
There are 16 such numbers.
If the number is a product of two composite numbers, it must be 16, which is the product of 4 and 4. The prime factors of 16 are 2, 2, 2, and 2. The smallest composite number is 4, so the smallest possible product of two composite numbers is 4 x 4 = 16.
The composite numbers between 10 and 20 are 12, 14, 15, 16 and 18.
composite numbers between 11 and 21:12 14 15 16 18
The composite factors of 44 are 4, 8, 16, 32, 64
All even numbers greater than 2 are composite.
The composite numbers between 11 and 19 are 12, 14, 15, 16 and 18