Calculate the Greatest Common Factor or GCF of 1247
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The instructions to find the GCF of 1247 are the next:
1. Decompose all numbers into prime factors
| 1247 | 29 |
| 43 | 43 |
| 1 |
2. Write all numbers as the product of its prime factors
| Prime factors of 1247 | = | 29 . 43 |
3. Choose the common prime factors with the lowest exponent
Common prime factors: 29 , 43
Common prime factors with the lowest exponent: 291, 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 = 291. 431 = 1247
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