Calculate the Greatest Common Factor or GCF of 989
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The instructions to find the GCF of 989 are the next:
1. Decompose all numbers into prime factors
989 | 23 |
43 | 43 |
1 |
2. Write all numbers as the product of its prime factors
Prime factors of 989 | = | 23 . 43 |
3. Choose the common prime factors with the lowest exponent
Common prime factors: 23 , 43
Common prime factors with the lowest exponent: 231, 431
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 = 231. 431 = 989
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