18 is a composite number having the factors 1, 2, 3, 6, 9, and 18. The composite numbers that are factors of 18 are 6, 9, and 18.
18 (All even numbers except 2 are composite.)
The composite numbers between 11 and 19 are 12, 14, 15, 16 and 18
The composite numbers between 10 and 20 are 12, 14, 15, 16 and 18.
Composite numbers.Example: 17- factors of 17...1 and 17- This is a prime number.Example: 18- factors of 18...1,2,3,6,9,18- This is a composite number.
Composite numbers are positive integers greater than 1 that have more than two factors. Between 15 and 25, the composite numbers are 16, 18, 20, 21, 22, 24. These numbers can be divided evenly by factors other than 1 and themselves, making them composite.
All even numbers greater than 2 are composite.
4, 14, 18 and 10 are composite numbers.
There are 18 composite numbers up to and including 30
5 and 37 are prime. 12 and 18 are composite.
27 and 18 are both composite numbers. They are multiples of 3.
The factors of 18 are: 1, 2, 3, 6, 9, and 18.Since there are other factors in addition to '1' and the number itself,the number is composite.18 is a composite number because it has more than 2 factors18 is a composite number. A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite.18 is not prime; it is composite. 18 = 2 * 3 * 3
5 and 41 are prime numbers but 18 is a composite number
18 prime numbers
18 (All even numbers except 2 are composite.)
4,6,8,9,10,12,14,15,16
1, 2, 3, 6, 9, 18
11 numbers 2, 4, 6, 8, 9, 10, 12, 14, 15, 16, 18 * * * * * NO! 2 is a prime, not a composite!