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Express each number in terms of its prime factors.

105 = 3 x 5 x 7

189 = 3 x 3 x 3 x 7

The prime factors common to both numbers are 3 and 7.

The greatest common factor is therefore 3 x 7 = 21

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14y ago
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12y ago

The GCF is 21.

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7y ago

It is: 5

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Q: What is the greatest factor of 84 and 105?
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Greatest common factor of 63 84 and 105?

The greatest common factor of 63, 84, and 105 is 21.


What is the greatest common factor of 84 105 142 and 148?

The GCF of 84, 105, 142, and 148 is 1.


What is the greatest common factor of 15 and 105?

The greatest common factor of 15 and 105 is 15.


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what is the greatest common factor of 28 49 and 105


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Related questions

Greatest Common Factor of 84 and 105?

The greatest common factor of 84 and 105 is 21.


Greatest common factor of 63 84 and 105?

The greatest common factor of 63, 84, and 105 is 21.


What is the greatest common factor of 84 105 142 and 148?

The GCF of 84, 105, 142, and 148 is 1.


What is greatest common factor of 84 and 105?

The GCF is 21.


What are the greatest common factor of 63 84 105?

The GCF is 21.


Greatest common factor for 84 and 105?

The GCF is 21.


What are the greatest common factor of 6384105?

If that's 63, 84 and 105, the GCF is 21.


What is the greatest common factors of 84 and 105?

The GCF of 84 and 105 is 21.The factors of 84 are 1, 2, 3, 4, 6, 7, 12, 14, 21, and 84.The factors of 105 are 1, 3, 5, 7, 15, 21, 35, and 105.The greatest number they have in common (Hint hint, greatest common factor) is 21.


What is the greatest common factor for 84 105 and 147?

To find the greatest common factor (GCF) of 84, 105, and 147, you need to identify the common factors of these numbers. The factors of 84 are 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, and 84. The factors of 105 are 1, 3, 5, 7, 15, 21, 35, and 105. The factors of 147 are 1, 3, 7, 21, 49, and 147. The greatest common factor among these three numbers is 21.


What is the greatest factor of 84?

The greatest factor of any number is itself.


What are the factors of 84 and 105 that are square numbers?

4 is the only square number that is a factor of 84. No square number is a factor of 105.


What is the greatest common factor of 15 and 105?

The greatest common factor of 15 and 105 is 15.