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Prime factorization of 9 = 3x3
Prime factorization of 81 = 3x3x3x3
It is clear from prime factorizations that 3x3 = 9 is the required answer.
Alternate method:
Factors of 9 are 1, 3 and 9.
Factors of 81 are 1, 3, 9, 27 and 81.
So, 9 is the gcf of 9 and 81.
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What is the greatest common factor of 45 81 and 99?
The greatest common factor is 9
What is the greatest common factor for 36 and 81?
The Greatest Common Factor (GCF) is: 9
What is the greatest common factor of 36 81 and 144?
The greatest common factor (GCF) of 36 81 and 144 is 9.
What is the greatest common factor of 63 81 and 99?
The greatest common factor of 63, 81, and 99 is 9.The prime factorization of 63 is 7*9.The prime factorization of 81 is 9*9.The prime factorization of 99 is 11*9.Thus, the greatest of the common factors of 9.
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 of 81 108 and 117?
The Greatest Common Factor of 81, 108, 117: 9
What is the greatest common factor of 45 81 and 99?
The greatest common factor is 9
What is the greatest common factor for 36 and 81?
The Greatest Common Factor (GCF) is: 9
What is the greatest common factor of 36 81 and 144?
The greatest common factor (GCF) of 36 81 and 144 is 9.
What is the greatest common factor of 9 out of 81?
Since 9 is a factor of 81, it is automatically the GCF.
What is the greatest common factor of 9 30 and 81?
The greatest common factor (GCF) is: 3
What is 72 and 81 in the greatest common factor?
9
What is the greatest common factor with 72 and 81?
It is 9
What is the greatest common factor of 63 81 and 99?
The greatest common factor of 63, 81, and 99 is 9.The prime factorization of 63 is 7*9.The prime factorization of 81 is 9*9.The prime factorization of 99 is 11*9.Thus, the greatest of the common factors of 9.
What is the highest common factor of 63 and 81?
The Greatest Common Factor (GCF) is: 9
What is the Greatest common factor of 81 and 801?
The GCF of 81 and 801 is 9
What is the greatest common factor of 9 81 and 27?
The GCF is 9.
