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It IS true that every whole number is either prime or composite. But there are numbers that are not whole numbers, such as 2.5, which are neither prime nor composite.

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Q: Is every number either prime or composite?
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Related questions

Are all prime numbers composite no?

Every positive integer greater than 1 is either prime or composite.


How do you get prime and composite?

Every natural number above one is either prime or composite, if it is prime, its only factors are itself and 1, if it is composite it has additional factors beyond that.


Can a number be a prime and a composite?

No, because it's either a prime number or a composite number.


Which counting number is not a prime number or a composite number?

None, everything is either prime or composite.


Is every even number greater than 2 a composite number?

Yes, a composite number is a positive integer which has a positive divisor other than one or itself. By definition, every integer greater than one is either a prime number or a composite number and since 2 is the only even prime number the result is every number greater than 2 is a composite number


Is 572 a composite or prime answer?

is every number in the nineties is a composite answer


How do you make 25 a prime number?

Every positive number greater than one is either prime or composite and can't switch from one to the other.


Is every number in nineties composite or prime?

they are both prime and composite numbers


Why is every number greater than 1 is either prime or composite?

That is how they are defined. Any number greater than 1 is composite if it has a factor other than 1 and itself. If it is not a composite number then it is a prime number. It mustbe one or the other and the result follows.


Which number is not a prime or a composite number 21 15 8 and 1?

1 is not composite or prime.


Is every natural number either prime or composite?

In all but one case. Literally, The number "one" is neither prime nor composite.


Is every number in the nineties composite or prime?

97 is the only prime number.