Calculate the Greatest Common Factor or GCF of 80 and 4050
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The instructions to find the GCF of 80 and 4050 are the next:
1. Decompose all numbers into prime factors
| 80 | 2 |
| 40 | 2 |
| 20 | 2 |
| 10 | 2 |
| 5 | 5 |
| 1 |
| 4050 | 2 |
| 2025 | 3 |
| 675 | 3 |
| 225 | 3 |
| 75 | 3 |
| 25 | 5 |
| 5 | 5 |
| 1 |
2. Write all numbers as the product of its prime factors
| Prime factors of 80 | = | 24 . 5 |
| Prime factors of 4050 | = | 2 . 34 . 52 |
3. Choose the common prime factors with the lowest exponent
Common prime factors: 2 , 5
Common prime factors with the lowest exponent: 21, 51
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. 51 = 10
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