Calculate the Greatest Common Factor or GCF of 822
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The instructions to find the GCF of 822 are the next:
1. Decompose all numbers into prime factors
822 | 2 |
411 | 3 |
137 | 137 |
1 |
2. Write all numbers as the product of its prime factors
Prime factors of 822 | = | 2 . 3 . 137 |
3. Choose the common prime factors with the lowest exponent
Common prime factors: 2 , 3 , 137
Common prime factors with the lowest exponent: 21, 31, 1371
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 = 21. 31. 1371 = 822
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