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Calculate the Greatest Common Factor or GCF of 6840

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The instructions to find the GCF of 6840 are the next:

1. Decompose all numbers into prime factors

68402
34202
17102
8553
2853
955
1919
1

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

Prime factors of 6840=23 . 32 . 5 . 19

3. Choose the common prime factors with the lowest exponent

Common prime factors: 2 , 3 , 5 , 19

Common prime factors with the lowest exponent: 23, 32, 51, 191

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 = 23. 32. 51. 191 = 6840


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