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Calculate the Greatest Common Factor or GCF of 72 and 3584

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The instructions to find the GCF of 72 and 3584 are the next:

1. Decompose all numbers into prime factors

722
362
182
93
33
1
35842
17922
8962
4482
2242
1122
562
282
142
77
1

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

Prime factors of 72=23 . 32
Prime factors of 3584=29 . 7

3. Choose the common prime factors with the lowest exponent

Common prime factors: 2

Common prime factors with the lowest exponent: 23

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 = 8


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