Calculate the Greatest Common Factor or GCF of 1260 and 4600
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The instructions to find the GCF of 1260 and 4600 are the next:
1. Decompose all numbers into prime factors
| 1260 | 2 |
| 630 | 2 |
| 315 | 3 |
| 105 | 3 |
| 35 | 5 |
| 7 | 7 |
| 1 |
| 4600 | 2 |
| 2300 | 2 |
| 1150 | 2 |
| 575 | 5 |
| 115 | 5 |
| 23 | 23 |
| 1 |
2. Write all numbers as the product of its prime factors
| Prime factors of 1260 | = | 22 . 32 . 5 . 7 |
| Prime factors of 4600 | = | 23 . 52 . 23 |
3. Choose the common prime factors with the lowest exponent
Common prime factors: 2 , 5
Common prime factors with the lowest exponent: 22, 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 = 22. 51 = 20
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