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The GCF of 81 and 135 is 27.

81= 1x81,3x27 135= 1x135, 5x27
The factors of 81 are:

1, 3, 9, 27, 81

The factors of 135 are:

1, 3, 5, 9, 15, 27, 45, 135

The common factors are:

1, 3, 9, 27

The Greatest Common Factor:

GCF = 27

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8y ago
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15y ago

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Q: What is the greatest common factor of 81 and 135?
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The greatest common factor of 16 72 and 81 is 1.


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What is the greatest common factor of 36 81 and 144?

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What are the greatest common factors of 45 and 81?

Short answer: There are none. There is neither a greatest common factor nor common factors of a single number, such as 81, because there cannot be any form of common factor without two or more numbers to compare. Common factors are factors that the numbers being compared have in common. The greatest common factor is the largest factor that all the numbers being compared have in common. Thus, since there are not two or more numbers to compare, there are neither common factors nor a greatest common factor. The factors of 81 are 1, 3, 9, 27, and 81. Examples: The common factors of 18 and 81 are 1, 3, and 9; the greatest common factor is 9. The common factors of 20 and 81 are only 1; the greatest common factor is 1. The common factors of 39 and 81 are 1 and 3; the greatest common factor is 3. The common factors of 81 and 243 are 1, 3, 9, 27, and 81; the greatest common factor is 81.


What is the greatest common factor for 36 and 81?

Ah, finding the greatest common factor is like finding a happy little tree in a forest. For 36 and 81, we look for the largest number that can divide evenly into both. The greatest common factor for 36 and 81 is 9, like a gentle breeze on a sunny day.