Calculate the Greatest Common Factor or GCF of 324
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The instructions to find the GCF of 324 are the next:
1. Decompose all numbers into prime factors
324 | 2 |
162 | 2 |
81 | 3 |
27 | 3 |
9 | 3 |
3 | 3 |
1 |
2. Write all numbers as the product of its prime factors
Prime factors of 324 | = | 22 . 34 |
3. Choose the common prime factors with the lowest exponent
Common prime factors: 2 , 3
Common prime factors with the lowest exponent: 22, 34
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 = 22. 34 = 324
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