Calculate the Greatest Common Factor or GCF of 1809
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The instructions to find the GCF of 1809 are the next:
1. Decompose all numbers into prime factors
1809 | 3 |
603 | 3 |
201 | 3 |
67 | 67 |
1 |
2. Write all numbers as the product of its prime factors
Prime factors of 1809 | = | 33 . 67 |
3. Choose the common prime factors with the lowest exponent
Common prime factors: 3 , 67
Common prime factors with the lowest exponent: 33, 671
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 = 33. 671 = 1809
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