Calculate the Greatest Common Factor or GCF of 821
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The instructions to find the GCF of 821 are the next:
1. Decompose all numbers into prime factors
821 | 821 |
1 |
2. Write all numbers as the product of its prime factors
Prime factors of 821 | = | 821 |
3. Choose the common prime factors with the lowest exponent
Common prime factors: 821
Common prime factors with the lowest exponent: 8211
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 = 8211 = 821
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