Calculate the Greatest Common Factor or GCF of 7638
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The instructions to find the GCF of 7638 are the next:
1. Decompose all numbers into prime factors
7638 | 2 |
3819 | 3 |
1273 | 19 |
67 | 67 |
1 |
2. Write all numbers as the product of its prime factors
Prime factors of 7638 | = | 2 . 3 . 19 . 67 |
3. Choose the common prime factors with the lowest exponent
Common prime factors: 2 , 3 , 19 , 67
Common prime factors with the lowest exponent: 21, 31, 191, 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 = 21. 31. 191. 671 = 7638
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