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Calculate the Greatest Common Factor or GCF of 538

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The instructions to find the GCF of 538 are the next:

1. Decompose all numbers into prime factors

5382
269269
1

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

Prime factors of 538=2 . 269

3. Choose the common prime factors with the lowest exponent

Common prime factors: 2 , 269

Common prime factors with the lowest exponent: 21, 2691

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. 2691 = 538


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