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Q: What is the composite numbers for 81?

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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.

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.

81 is not prime it's a composite number

21, 51, 81, 91.

Composite

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Both 81 and 313968 are composite numbers.

If you mean: 53 81 41 47 and 31 then 81 is a composite number while all the rest are prime numbers

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.

61 and 71 are prime numbers the rest are composite numbers

3 is prime. Rest are composite.

number of composite numbers between 81 and 100 = 15composite numbers between 81 and 100 = 82, 84, 85, 86, 87, 88, 90, 91, 92, 93, 94, 95, 96, 98, 99

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.

81 is not prime it's a composite number

No because they are all composite numbers having more than two factors

21, 51, 81, 91.

It is composite.

81, 82, 84, 85, 86, 87, 88. 80 and 90 are composite too

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