Calculate the Greatest Common Factor or GCF of 494
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The instructions to find the GCF of 494 are the next:
1. Decompose all numbers into prime factors
494 | 2 |
247 | 13 |
19 | 19 |
1 |
2. Write all numbers as the product of its prime factors
Prime factors of 494 | = | 2 . 13 . 19 |
3. Choose the common prime factors with the lowest exponent
Common prime factors: 2 , 13 , 19
Common prime factors with the lowest exponent: 21, 131, 191
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. 131. 191 = 494
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