Calculate the Greatest Common Factor or GCF of 847
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The instructions to find the GCF of 847 are the next:
1. Decompose all numbers into prime factors
847 | 7 |
121 | 11 |
11 | 11 |
1 |
2. Write all numbers as the product of its prime factors
Prime factors of 847 | = | 7 . 112 |
3. Choose the common prime factors with the lowest exponent
Common prime factors: 7 , 11
Common prime factors with the lowest exponent: 71, 112
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 = 71. 112 = 847
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