Calculate the Greatest Common Factor or GCF of 2181
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The instructions to find the GCF of 2181 are the next:
1. Decompose all numbers into prime factors
2181 | 3 |
727 | 727 |
1 |
2. Write all numbers as the product of its prime factors
Prime factors of 2181 | = | 3 . 727 |
3. Choose the common prime factors with the lowest exponent
Common prime factors: 3 , 727
Common prime factors with the lowest exponent: 31, 7271
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. 7271 = 2181
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