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Calculate the Greatest Common Factor or GCF of 180

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The instructions to find the GCF of 180 are the next:

1. Decompose all numbers into prime factors

1802
902
453
153
55
1

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

Prime factors of 180=22 . 32 . 5

3. Choose the common prime factors with the lowest exponent

Common prime factors: 2 , 3 , 5

Common prime factors with the lowest exponent: 22, 32, 51

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. 32. 51 = 180


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