Calculate the Greatest Common Factor or GCF of 459
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The instructions to find the GCF of 459 are the next:
1. Decompose all numbers into prime factors
| 459 | 3 |
| 153 | 3 |
| 51 | 3 |
| 17 | 17 |
| 1 |
2. Write all numbers as the product of its prime factors
| Prime factors of 459 | = | 33 . 17 |
3. Choose the common prime factors with the lowest exponent
Common prime factors: 3 , 17
Common prime factors with the lowest exponent: 33, 171
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. 171 = 459
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