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Calculate the Greatest Common Factor or GCF of 868

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The instructions to find the GCF of 868 are the next:

1. Decompose all numbers into prime factors

8682
4342
2177
3131
1

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

Prime factors of 868=22 . 7 . 31

3. Choose the common prime factors with the lowest exponent

Common prime factors: 2 , 7 , 31

Common prime factors with the lowest exponent: 22, 71, 311

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. 71. 311 = 868


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