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Factors of 81 in pairs = 1 x 81, 3 x 27, 9 x 9, 27 x 3, 81 x 1.

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8y ago

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What are all the whole number factors for 81?

81 = 3x3x3x3 = 3481 = 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


Is the number 81 a whole number?

Whole Number : Set of counting numbers along with zero. i.e. W = {0,1,2,3...} Therefore, 81 is a whole number.


Is 81 whole number?

Yes, it is.


What are 2 whole numbers that 80 is in between?

79 & 81, or any whole number from 1 to 79 with any whole number greater than 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 is 81 over 9 as a whole number?

Oh, dude, 81 divided by 9 is like, 9. So, as a whole number, it's just 9. Easy peasy lemon squeezy. Math can be a walk in the park, you know?


Why is 81 a composite?

It has more than two distinct factors; they are 1, 3, 9, 27, 81


Which number has exactly 5 factors?

16 and 81 have 5 factors


Is -81 an integer?

Yes, -81 is an integer. An integer is a whole number that can be positive, negative, or zero. In this case, -81 is a negative whole number, making it an integer.


Does number 81 has 12 factors?

No, it does not.


Do all square numbers have exactly 3 factors?

No. 81=9*9=3*27=1*81 81 has 5 factors and is a square number. 36=6*6=3*12=1*36=2*18=4*9 36 has 9 factors and is a square number. This doesn't mean that no square numbers have exactly 3 factors though, because: 9=3*3=1*9 9 has 3 factors and is a square number. 4=2*2=1*4 4 has 3 factors and is a square number. All square numbers have an odd number of factors though (because they have a whole number which multiplies by itself to get the number). Factors are whole numbers only, and not decimals. Hope this helps :)