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Q: Why do you need to know all of the factors to a number to know if it is a prime or composite number?

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Prime numbers have two factors. Composite numbers have more than two.

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.

Prime numbers have only two factors. Composite numbers have more than two.

Prime numbers have two factors. Composite have more than two. Neither (one and zero) have less than two.

Because it is divisible by 10 with no remainder and it has more than two factors which makes it a composite number whereas a prime number has only two factors which are itself and one

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Prime numbers have two factors; composite numbers have more than two factors. 1 and 0 are neither.

Prime numbers have two factors. Composite numbers have more than two.

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.

If you know a number is composite, then you also know that it can be factored into more factors than just 1 and itself. 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.

No. There are techniques to find if it is prime

Prime numbers have only two factors. Composite numbers have more than two.

Prime numbers have just two factors, 1 and itself. Composite numbers have more than two factors.

No, you only need to determine if the number has any factors besides 1 and itself. If it does, it is a composite number.

Prime numbers have two factors. Composite have more than two. Neither (one and zero) have less than two.

Because it is divisible by 10 with no remainder and it has more than two factors which makes it a composite number whereas a prime number has only two factors which are itself and one

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.

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.

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