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It is in a class called "units" since it is neither prime nor composite.

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9y ago

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Is the number one a prime factor?

No 1 it is not a prime number. The definition of a prime number is that it can only have factors of one and itself. Since one already has one then it can not be a prime number.


Is it possible for a squared number to be prime?

No, a prime number is only divisible by itself and one. And since one doesn't count as a prime number, no.


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