Calculate the Greatest Common Factor or GCF of 36, 66 and 363
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The instructions to find the GCF of 36, 66 and 363 are the next:
1. Decompose all numbers into prime factors
| 36 | 2 |
| 18 | 2 |
| 9 | 3 |
| 3 | 3 |
| 1 |
| 66 | 2 |
| 33 | 3 |
| 11 | 11 |
| 1 |
| 363 | 3 |
| 121 | 11 |
| 11 | 11 |
| 1 |
2. Write all numbers as the product of its prime factors
| Prime factors of 36 | = | 22 . 32 |
| Prime factors of 66 | = | 2 . 3 . 11 |
| Prime factors of 363 | = | 3 . 112 |
3. Choose the common prime factors with the lowest exponent
Common prime factors: 3
Common prime factors with the lowest exponent: 31
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 = 31 = 3
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