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81 is a composite number. Composite numbers are any number that has more than two factors(one and itself). Therefore, since 3,9, and 27 are factors of 81 that makes it a composite number.

Q: 81 prime or composite

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81 is not prime it's a composite number

81 is not prime, it is composite.

Composite

81 is a Composite Number

81 is an odd composite number.

Related questions

81 is not prime it's a composite number

81 is not prime, it is composite.

It is composite.

Composite

It is a composite number, you can get 81 by mulitpling 1*81, 3*27, and 9*9.compositeNo the number 81 is not prime it can be divided by nine.composite

81 is a composite number because it has more than two factors.

3 is prime. Rest are composite.

81 is a composite number because its factors are more than 2

It is a composite number.

81 is a Composite Number

41 is prime. 51 is composite. 51=3 x 17 . 71 is prime. 81 is composite. 92 91 is composite. 91 = 7 × 13

81 is an odd composite number.