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Calculate the Greatest Common Factor or GCF of 872

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The instructions to find the GCF of 872 are the next:

1. Decompose all numbers into prime factors

8722
4362
2182
109109
1

2. Write all numbers as the product of its prime factors

Prime factors of 872=23 . 109

3. Choose the common prime factors with the lowest exponent

Common prime factors: 2 , 109

Common prime factors with the lowest exponent: 23, 1091

4. Calculate the Greatest Common Factor or GCF

Remember, to find the GCF of several numbers you must multiply the common prime factors with the lowest exponent.

GCF = 23. 1091 = 872


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