Calculate the Greatest Common Factor or GCF of 492
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The instructions to find the GCF of 492 are the next:
1. Decompose all numbers into prime factors
| 492 | 2 |
| 246 | 2 |
| 123 | 3 |
| 41 | 41 |
| 1 |
2. Write all numbers as the product of its prime factors
| Prime factors of 492 | = | 22 . 3 . 41 |
3. Choose the common prime factors with the lowest exponent
Common prime factors: 2 , 3 , 41
Common prime factors with the lowest exponent: 22, 31, 411
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. 31. 411 = 492
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