Calculate the Greatest Common Factor or GCF of 478
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The instructions to find the GCF of 478 are the next:
1. Decompose all numbers into prime factors
478 | 2 |
239 | 239 |
1 |
2. Write all numbers as the product of its prime factors
Prime factors of 478 | = | 2 . 239 |
3. Choose the common prime factors with the lowest exponent
Common prime factors: 2 , 239
Common prime factors with the lowest exponent: 21, 2391
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. 2391 = 478
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