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Calculate the Greatest Common Factor or GCF of 2109

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The instructions to find the GCF of 2109 are the next:

1. Decompose all numbers into prime factors

21093
70319
3737
1

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

Prime factors of 2109=3 . 19 . 37

3. Choose the common prime factors with the lowest exponent

Common prime factors: 3 , 19 , 37

Common prime factors with the lowest exponent: 31, 191, 371

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 = 31. 191. 371 = 2109


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