Calculate the Greatest Common Factor or GCF of 8, 11, 35 and 39
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The instructions to find the GCF of 8, 11, 35 and 39 are the next:
1. Decompose all numbers into prime factors
| 8 | 2 |
| 4 | 2 |
| 2 | 2 |
| 1 |
| 11 | 11 |
| 1 |
| 35 | 5 |
| 7 | 7 |
| 1 |
| 39 | 3 |
| 13 | 13 |
| 1 |
2. Write all numbers as the product of its prime factors
| Prime factors of 8 | = | 23 |
| Prime factors of 11 | = | 11 |
| Prime factors of 35 | = | 5 . 7 |
| Prime factors of 39 | = | 3 . 13 |
3. Choose the common prime factors with the lowest exponent
Common prime factors: None
Common prime factors with the lowest exponent: None
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.
Since there are not common prime factors the GCF is 1
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