Calculate the Greatest Common Factor or GCF of 88, 124 and 310
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The instructions to find the GCF of 88, 124 and 310 are the next:
1. Decompose all numbers into prime factors
| 88 | 2 |
| 44 | 2 |
| 22 | 2 |
| 11 | 11 |
| 1 |
| 124 | 2 |
| 62 | 2 |
| 31 | 31 |
| 1 |
| 310 | 2 |
| 155 | 5 |
| 31 | 31 |
| 1 |
2. Write all numbers as the product of its prime factors
| Prime factors of 88 | = | 23 . 11 |
| Prime factors of 124 | = | 22 . 31 |
| Prime factors of 310 | = | 2 . 5 . 31 |
3. Choose the common prime factors with the lowest exponent
Common prime factors: 2
Common prime factors with the lowest exponent: 21
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 = 21 = 2
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