Calculate the Greatest Common Factor or GCF of 2556
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The instructions to find the GCF of 2556 are the next:
1. Decompose all numbers into prime factors
| 2556 | 2 |
| 1278 | 2 |
| 639 | 3 |
| 213 | 3 |
| 71 | 71 |
| 1 |
2. Write all numbers as the product of its prime factors
| Prime factors of 2556 | = | 22 . 32 . 71 |
3. Choose the common prime factors with the lowest exponent
Common prime factors: 2 , 3 , 71
Common prime factors with the lowest exponent: 22, 32, 711
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 = 22. 32. 711 = 2556
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