Neither. The characteristic of being prime or composite is defined for positive integers that are greater than or equal to 2.
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The number 1 is neither a prime nor a composite number.
ANSWER: One is neither prime nor composite.
It is 1 which is neither a prime nor a composite number
There is no special name for it. It is simply neither prime nor composite.
Prime numbers have only 2 factors, 1 and itself. Composite numbers have 3 or more factors. 1 has only 1 factor, so it is neither a prime number or a composite number.