Calculate the Greatest Common Factor or GCF of 1556
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The instructions to find the GCF of 1556 are the next:
1. Decompose all numbers into prime factors
1556 | 2 |
778 | 2 |
389 | 389 |
1 |
2. Write all numbers as the product of its prime factors
Prime factors of 1556 | = | 22 . 389 |
3. Choose the common prime factors with the lowest exponent
Common prime factors: 2 , 389
Common prime factors with the lowest exponent: 22, 3891
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. 3891 = 1556
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