Calculate the Greatest Common Factor or GCF of 63, 180 and 359
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The instructions to find the GCF of 63, 180 and 359 are the next:
1. Decompose all numbers into prime factors
| 63 | 3 |
| 21 | 3 |
| 7 | 7 |
| 1 |
| 180 | 2 |
| 90 | 2 |
| 45 | 3 |
| 15 | 3 |
| 5 | 5 |
| 1 |
| 359 | 359 |
| 1 |
2. Write all numbers as the product of its prime factors
| Prime factors of 63 | = | 32 . 7 |
| Prime factors of 180 | = | 22 . 32 . 5 |
| Prime factors of 359 | = | 359 |
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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