Calculate the Greatest Common Factor or GCF of 872
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The instructions to find the GCF of 872 are the next:
1. Decompose all numbers into prime factors
872 | 2 |
436 | 2 |
218 | 2 |
109 | 109 |
1 |
2. Write all numbers as the product of its prime factors
Prime factors of 872 | = | 23 . 109 |
3. Choose the common prime factors with the lowest exponent
Common prime factors: 2 , 109
Common prime factors with the lowest exponent: 23, 1091
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 = 23. 1091 = 872
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