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A composite number is a positive integer that has at least one positive divisor other than one or itself. For example 4,6,8,9,10, 12, 14, 15, 16, 18, 20,21, 22...are composite numbers

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Q: How do you know when a number is a composite number?
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Related questions

How do you know 120 is a composite number?

You know 120 is a composite number because it is an even number that is greater than 2.


How do you know it is a composite number?

A number is composite if it has more than two factors. Once you find a third, you know.


Is 649 prime or composite?

No it is a composite number if you want to know


How do you know 28 is composite number?

We know that 28 is a composite number because:It is an even numberIt is divisible by more than 2 numbers


Do you need to know all of the factors of number to know if it is prime or composite?

No, if a number has even one additional factor besides itself and the number one, then you automatically know it's composite.


How do you determine a composite number?

Composite numbers have more than two factors. Once you find a third factor, you know your number is composite.


Do you need to know all of the factors of a number to know it is prime or composite?

To know that a number is prime you need to know that it has no factors other than 1 and the number itself.To know that a number is composite you only need to know one factor other than the number itself or 1.


Is 276 a prime or composite number?

Composite: i know it can at least be divided by 2 and 3


What is a composite number list 3 composite numbers?

dont know dont care


Is 83 composite-?

For goodness sake! This will be on a test one day and you will not know it! But, the answer is no, it is prime


How would you know if 86 is composite?

The only even prime number is 2. Every other even number is composite.


Why is it important to know if a number is prime or composite?

A prime number can never be composite in any case. There is an exception for 2 which is both.