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Q: Is 81 a prime or composite or neither?

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Composite

81 = 92 = 34 So 81 is not prime

neither prime or composite

81 is not prime it's a composite number

81 is a composite number as it has factors other than 1 and itself (3, 27 and 9).

81 is not prime, it is composite.

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. 81 is composite, 111 is prime.

It is composite.

It is 1 that is neither a prime or a composite number The number 1 is neither prime nor composite.

ANSWER: One is neither prime nor composite.

0 is neither prime nor composite.

It is neither prime nor composite number.

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