Yes. One of the reasons are that if you Google it, they say it's a composite #. Second, a Prime number has 2 factors: 1 and itself. But 81 has 5 factors:1, 3, 9, 27, and 81.
81 is a composite number 3 * 3 * 3 * 3 = 81
Yes, I think so.
wowo is it a composite number dang how did I not see that...
No, it is not a composite number, it's a prime number.
Composite A prime number is a number that has only two factors (itself and one) A composite number is a number that has more than two factors.
One (1) is not a composite number.
81 is a composite number.
81 is not prime it's a composite number
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
Both 81 and 313968 are composite 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.
It has more than two distinct factors; they are 1, 3, 9, 27, 81
81 is a composite number because it has more than two factors.
81 is an odd composite number.
81 is a composite number and it is also a square number
81
81 is a composite number because its factors are more than 2