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Calculate the Greatest Common Factor or GCF of 16, 84, 96 and 116

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The instructions to find the GCF of 16, 84, 96 and 116 are the next:

1. Decompose all numbers into prime factors

162
82
42
22
1
842
422
213
77
1
962
482
242
122
62
33
1
1162
582
2929
1

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

Prime factors of 16=24
Prime factors of 84=22 . 3 . 7
Prime factors of 96=25 . 3
Prime factors of 116=22 . 29

3. Choose the common prime factors with the lowest exponent

Common prime factors: 2

Common prime factors with the lowest exponent: 22

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 = 22 = 4


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