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Calculate the Greatest Common Factor or GCF of 670

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The instructions to find the GCF of 670 are the next:

1. Decompose all numbers into prime factors

6702
3355
6767
1

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

Prime factors of 670=2 . 5 . 67

3. Choose the common prime factors with the lowest exponent

Common prime factors: 2 , 5 , 67

Common prime factors with the lowest exponent: 21, 51, 671

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. 51. 671 = 670


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