Because while 1 is not composite because it cannot be divided by anything other than 1, 1 cannot be prime either. A Prime number by definition is a number that cannot be defined by anything other than 1 and itself. However, 1 is, in fact, 1 and is only divisible by 1 (which is itself). Because of this paradox and the breaking of the technicality of the rule, 1 is simply considered not prime or composite in order to not create confusion.
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A prime number is a number with just two factors. A composite number is a number with more than two factors. Since the number 1 has just a single factor, 1, it is neither prime nor composite.
is 53 a prime, composite number
It is composite.
1 is the counting number that is neither a prime number nor a composite number.
4564282 is a composite number. 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.
the number 1 is neither. it is a special number. prime, nor composite.