Calculate the Greatest Common Factor or GCF of 244, 364 and 392
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The instructions to find the GCF of 244, 364 and 392 are the next:
1. Decompose all numbers into prime factors
| 244 | 2 |
| 122 | 2 |
| 61 | 61 |
| 1 |
| 364 | 2 |
| 182 | 2 |
| 91 | 7 |
| 13 | 13 |
| 1 |
| 392 | 2 |
| 196 | 2 |
| 98 | 2 |
| 49 | 7 |
| 7 | 7 |
| 1 |
2. Write all numbers as the product of its prime factors
| Prime factors of 244 | = | 22 . 61 |
| Prime factors of 364 | = | 22 . 7 . 13 |
| Prime factors of 392 | = | 23 . 72 |
3. Choose the common prime factors with the lowest exponent
Common prime factors: 2
Common prime factors with the lowest exponent: 22
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 = 22 = 4
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