Calculate the Greatest Common Factor or GCF of 1351 and 1372
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The instructions to find the GCF of 1351 and 1372 are the next:
1. Decompose all numbers into prime factors
| 1351 | 7 |
| 193 | 193 |
| 1 |
| 1372 | 2 |
| 686 | 2 |
| 343 | 7 |
| 49 | 7 |
| 7 | 7 |
| 1 |
2. Write all numbers as the product of its prime factors
| Prime factors of 1351 | = | 7 . 193 |
| Prime factors of 1372 | = | 22 . 73 |
3. Choose the common prime factors with the lowest exponent
Common prime factors: 7
Common prime factors with the lowest exponent: 71
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 = 71 = 7
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