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Prime number: divisible by itself and 1.

composite number: divisible by more than itself and 1.

Prime: 2 3 7 17 23

composite: 6 9 18 21

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14y ago
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12y ago

The factors of 12 are 1, 2, 3, 4, 6, and 12. Of them, 2 and 3 are prime, 4, 6, and 12 are composite, and 1 is neither, being the identity.

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11y ago

The prime numbers between 30 and 50 are 31, 37, 41, 43 and 47. The rest are composite.

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Q: What is the prime and composite number of 2 3 6 7 9 17 18 21 and 23?
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Related questions

What is the next composite number after 17?

17 is a prime number - the next composite number after 17 is 18.


Is 17 and 108 prime or composite?

The number 17 is a prime number but the number 108 is not a prime number as it can be divided by 2, 54, 4, 27, 6 and 18


Are 2 and 18 composite or prime?

2 is a prime number. 18 is a composite number.


What kind of numbers are whole numbers greater than 1 but are not prime numbers?

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.


Is 18 prime or composite number?

composite


Is 18 composite or prime?

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


Is 18 a composite or a prime number?

All even numbers greater than 2 are composite.


What is the composite number after 17?

The number after 17 is 18.


Is the number 18 a composite number or a prime 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 composite.


Which of these is a prime number 16 17 18 15?

a prime number that's ONLY multiples are itself and 1. example:4*4=16 3*5=15 9*2=18 1*17=17


What two composite numbers have the prime who's prime factors are 18?

18 is not a prime number so no number can have 18 as a prime factor.


Is 18 composite or a prime?

18 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.