Calculate the Greatest Common Factor or GCF of 1538
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The instructions to find the GCF of 1538 are the next:
1. Decompose all numbers into prime factors
1538 | 2 |
769 | 769 |
1 |
2. Write all numbers as the product of its prime factors
Prime factors of 1538 | = | 2 . 769 |
3. Choose the common prime factors with the lowest exponent
Common prime factors: 2 , 769
Common prime factors with the lowest exponent: 21, 7691
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. 7691 = 1538
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