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The greatest common factor of 4 and 8 is: 4.

Definition: A factor is a divisor - a number that will evenly divide into another number. The greatest common factor of two or more numbers is the largest factor that both numbers have in common.

Details of Solving the Problem

The greatest common factor of 4 is itself. Because 4 is a factor of 8 (2 x 4 = 8), and since there is no greater (larger) factor for 4 other than 4 itself, 4 is the greatest common factor of 8 and 4.

Another way to determine the greatest common factor is to find all the factors of the numbers and compare them.

The factors of 4 are 1, 2, and 4.

The factors of 8 are 1, 2, 4, and 8.

The common factors are 1, 2, and 4. Therefore, the greatest common factor is 4.

The greatest common factor can also be calculated by identifying the common prime factors and multiplying them together.

The prime factors of 4 are 2 and 2.

The prime factors of 8 are 2, 2, and 2.

The prime factors in common are 2 and 2, so the greatest common factor is 2 x 2 = 4.

Summary:

The common factors of 4 and 8 are 1, 2, and 4.

The greatest common factor of 4 and 8 is 4.
The GCF of 4 and 8 is 4.
4
4
The GCF is 4.

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Wiki User

7y ago

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More answers
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Wiki User

8y ago

The word "GREATEST" is a superlative adjective and that means there can be only one.
GCF(8, 4) = 4.

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Wiki User

13y ago

The greatest common factor (GCF) is 4.

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Wiki User

11y ago

The GCF is 4.

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Wiki User

9y ago

The GCF is 4.

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Wiki User

10y ago

the answer is 4. 4/4=1 and 8/4=2.

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Wiki User

14y ago

GCF of 8 & 4 is 4.

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Nathan Eyasu

Lvl 3
1y ago

4

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Wiki User

8y ago

It is four

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Wiki User

11y ago

4 is.

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Q: What is the greatest common factor of 4 and 8?
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