Calculate the Greatest Common Factor or GCF of 789
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The instructions to find the GCF of 789 are the next:
1. Decompose all numbers into prime factors
789 | 3 |
263 | 263 |
1 |
2. Write all numbers as the product of its prime factors
Prime factors of 789 | = | 3 . 263 |
3. Choose the common prime factors with the lowest exponent
Common prime factors: 3 , 263
Common prime factors with the lowest exponent: 31, 2631
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. 2631 = 789
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