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Calculate the Greatest Common Factor or GCF of 318

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The instructions to find the GCF of 318 are the next:

1. Decompose all numbers into prime factors

3182
1593
5353
1

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

Prime factors of 318=2 . 3 . 53

3. Choose the common prime factors with the lowest exponent

Common prime factors: 2 , 3 , 53

Common prime factors with the lowest exponent: 21, 31, 531

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 = 21. 31. 531 = 318


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