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The factors of 21 are 1, 3, 7, and 21 which means that 21 is composite.

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โˆ™ 2009-04-23 22:13:03
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Q: List all the factors of 21 is the number 21 prime or composite?
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Related questions

Is 74 a prime or composite number?

Composite but i just can't list the factors.


What is prime factors of composite numbers?

Every composite number can be broken down into its factors, and if you break those factors down as far as you can go, then you have a list of the prime factors of the composite number that you started with.


What are the prime and composite number of the factors 92?

To find the prime and composite factors of a number, you can list the factor pairs. 92: 1 x 92 2 x 46 4 x 23 The prime factors are 2, 23. The composite factors are 4, 46, 92.


Can you list two composite numbers whose product is prime?

No, because a prime number that has only two factors, 1(which is niether prime nor composite) and itself(prime).


Who discover the prime and composite numbers?

You do! You first list all the factors of a 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.


Who discover prime and composite numbers?

You do! You list the factors to see if it is prime or not. 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.


How do you learn to do prime and composite numbers?

List their factors. Prime numbers have two factors, composite numbers have more than two.


Is 73 prime or composite and what are the factors?

73 is Prime, therefore there are no factors to list except for 1.


What are the prime and composite numbers of 33 18?

To find the prime and composite factors of a number, list all the factor pairs of the number. Then, go through them and list the primes and composites. 33 1 x 33 3 x 11 The prime factors are 3 and 11. The composite factor is 33. 1 is neither prime nor composite. 18 1 x 18 2 x 9 3 x 6 The prime factors are 2 and 3. The composite factors are 6, 9, and 18.


How do you solve composite factor?

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What is a list of the factors of 27?

The factors of 27 are 1,3,9,27 It's NOT prime it IS composite


Can a prime number be a factor of a composite number?

yes because 2,3,5,7,11,13,17,19,23,29 are the first 10 prime numbers so if i say list factors of 12 2 is one


What are the numbers that are composite?

The numbers with three or more factors; it's an infinite list.


Is 9 prime or if it is composite then can you list all the factors?

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List all the factors of 12 is the number 12 prime?

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What are all of the composite numbers and all of the prime numbers?

It is impossible to list the infinite number of prime numbers and composite numbers.


Can you list all the factors of a composite number?

Yes. So can you.


What are all the prime composite numbers?

There is no prime composite number; an integer greater than 2 can be either prime or composite, but not both. Nor can you list all the prime number and all the composite numbers: you have infinite sets in both cases.


What is the difference between finding the factors of a number and finding the prime factors of a number?

No difference. Once you've found the factors of a number, the prime numbers on that list are the prime factors.


How many composite numbers are between 1 and 99?

Look up a list of prime numbers (a Google search for "prime numbers" or "list of prime numbers" should do); every number (greater than 1) that is NOT a prime number is composite.


List of prime and composite numbers?

If you want both then it is every number, all numbers are eather prime or composite.


What are the composite odd numbers with factors?

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What is a composite number 7 31 41 91?

The only composite number in this list is 91. The others are prime numbers.


What are all the prime factors?

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Which factor does not appear in the lists of prime and composite numbers?

The number 1 is neither prime nor composite, so it is not included in either list.