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81=3*3*3*3
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∙ 13y ago
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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 number has more factors than 96?
81
Is 71 and 81 co prime?
71 is a prime number because it has only two factors whereas 81 is a composite number because it has more than two factors.
Why is 81 an composite number?
Because it has more than two factors and it is also a square number in which 9 times 9 = 81
Is 81 a prime composite or neither number?
81 is a composite number as it has factors other than 1 and itself (3, 27 and 9).
How many factors of the number 81?
FIve: 1, 3, 9, 27, 81
What are the 5 factors in 81?
Factors are just numbers 81 can be divided by. The whole number factors are 1, 3, 9, 27, and 81
Which number has exactly 5 factors?
16 and 81 have 5 factors
How Many Factors Does 81 have?
81 has 5 factors: 1, 3, 9, 27, and 81.
Does number 81 has 12 factors?
No, it does not.
Why is 81 a composite?
It has more than two distinct factors; they are 1, 3, 9, 27, 81
Is 81 a prime number or 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
What are all the factors of 81?
Factors are numbers you can multiply together to get another number. 81: 1, 3, 9, 27, 81
What are all the whole number factors for 81?
81 = 3x3x3x3 = 3481 = 1,3,9,27,81
Does the number 81 only have 3 factors?
No. It has 5.
How many factors do 81 have?
Five of them.
Why 81 have an odd number of factors and 40 have an even number of factors?
A number will have an odd number of factors if and only if one of those factors is the square root of the number. This is because any factor of a number you can find must pair up with another factor of that number, and multiply to give the number. The only exception is when the factor would be paired with itself. In other words, be the square root. 81 is a square number, and so the factor 9 (square root of 81) will not pair with any other factor, meaning 81 will have an odd number of factors. 40 has an even number of factors, because it is not a square number, and so all its factors can pair up.
