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Calculate the Greatest Common Factor or GCF of 415

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The instructions to find the GCF of 415 are the next:

1. Decompose all numbers into prime factors

4155
8383
1

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

Prime factors of 415=5 . 83

3. Choose the common prime factors with the lowest exponent

Common prime factors: 5 , 83

Common prime factors with the lowest exponent: 51, 831

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 = 51. 831 = 415


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