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It is a composite number, you can get 81 by mulitpling 1*81, 3*27, and 9*9.
composite
No the number 81 is not prime it can be divided by nine.
composite
Wiki User
∙ 2017-02-19 03:28:22
Wiki User
∙ 2010-03-19 14:56:3881 is a composite number because it has factors other than 1 and itself. 81 is not a Prime number.
81 = 3 * 3 * 3 * 3. Its positive integer factors are: 1, 3, 9, 27, 81.
Wiki User
∙ 2012-05-09 01:00:4381 is a composite number because it has more factors than 1 and itself. The factors of 81 are 1, 3, 9, 27, and 81.
Wiki User
∙ 2012-10-17 07:09:0181 = 92 = 34
So 81 is not prime
Wiki User
∙ 2016-11-24 13:59:25It is composite.
Wiki User
∙ 2016-11-24 14:54:16It is composite.
Wiki User
∙ 2017-02-14 03:35:58composite
Wiki User
∙ 2017-02-05 03:32:31composite
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Is 81 prime or a composite?
81 is a composite number because it has more than two factors.
Is 81 prime or composite numder?
81 is a composite number because its factors are more than 2
What is the composite number as a product of prime number for 81?
81 = 3*3*3*3
Is 81 a prime number?
81 is not a prime number. Its positive integer factors are: 1, 3, 9, 27, 81.81 is a Composite Number.
Is 41 51 71 81 91 a prime number?
41 is prime. 51 is composite. 51=3 x 17 . 71 is prime. 81 is composite. 92 91 is composite. 91 = 7 × 13
What is 81 is that a prime?
81 is not prime it's a composite number
Is 81 prime or comsite?
It is a composite number.
Is 81a prime?
81 is a Composite Number
What is the prime number of 81 is it even or odd?
81 is an odd composite number.
Is 81 prime or a composite?
81 is a composite number because it has more than two factors.
Is 81a composite number or a prime number?
81 is a composite number and it is also a square number
What is the greatest common factor of 29 and 81?
The greatest common factor of a prime number & a composite number is 1 if the composite number is not divisible by the prime number. 81(composite number) is not divisible by 29(prime number) so, gcf(29,81) = 1.
Is 81 prime or composite numder?
81 is a composite number because its factors are more than 2
Why is 81 prime?
81 is not prime, it is composite.
81 prime or composite?
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.
What is the composite number as a product of prime number for 81?
81 = 3*3*3*3
Is 81 a prime number?
81 is not a prime number. Its positive integer factors are: 1, 3, 9, 27, 81.81 is a Composite Number.
