Calculate the Greatest Common Factor or GCF of 32 and 1224
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The instructions to find the GCF of 32 and 1224 are the next:
1. Decompose all numbers into prime factors
| 32 | 2 |
| 16 | 2 |
| 8 | 2 |
| 4 | 2 |
| 2 | 2 |
| 1 |
| 1224 | 2 |
| 612 | 2 |
| 306 | 2 |
| 153 | 3 |
| 51 | 3 |
| 17 | 17 |
| 1 |
2. Write all numbers as the product of its prime factors
| Prime factors of 32 | = | 25 |
| Prime factors of 1224 | = | 23 . 32 . 17 |
3. Choose the common prime factors with the lowest exponent
Common prime factors: 2
Common prime factors with the lowest exponent: 23
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 = 23 = 8
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