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Calculate the Greatest Common Factor or GCF of 3420

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The instructions to find the GCF of 3420 are the next:

1. Decompose all numbers into prime factors

34202
17102
8553
2853
955
1919
1

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

Prime factors of 3420=22 . 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: 22, 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 = 22. 32. 51. 191 = 3420


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