Calculate the Greatest Common Factor or GCF of 1687
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The instructions to find the GCF of 1687 are the next:
1. Decompose all numbers into prime factors
1687 | 7 |
241 | 241 |
1 |
2. Write all numbers as the product of its prime factors
Prime factors of 1687 | = | 7 . 241 |
3. Choose the common prime factors with the lowest exponent
Common prime factors: 7 , 241
Common prime factors with the lowest exponent: 71, 2411
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. 2411 = 1687
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