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Well, yes, the number 1 is usually considered in a special category. It is not considered prime, but it isn't composite, either.

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Q: Is there any number that is not prime and not composite?
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Related questions

Is the number 5 both prime and composite?

No. There cannot be any number that is both prime and composite.


Is 948 a prime or composite number?

Any number that can be divided by any prime number smaller than itself is a composite number. 948 is a composite number because it can be divided by the prime numbers 2, 3, and 79.


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Forty-five is a composite number because it is not prime. Any number that is not prime is a composite number...Examples:4451002002256,0001,000,000


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0 is neither a prime or a composite number. It can not be divided by any number, so it would be difficult to classify it as prime or composite. 0 and 1 are the only numbers that are not prime and are not composite.


Is the sum of any two prime numbers always a composite number?

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Any even number except 2 is composite.


How can you determine what numbers are prime or composite?

If the number can be multiplied by any number other than 1 it is a composite any other is prime


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Prime factorization never includes a composite number. All numbers in prime factorization must be prime numbers.


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