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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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27.

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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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