Calculate the Greatest Common Factor or GCF of 1485
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The instructions to find the GCF of 1485 are the next:
1. Decompose all numbers into prime factors
| 1485 | 3 |
| 495 | 3 |
| 165 | 3 |
| 55 | 5 |
| 11 | 11 |
| 1 |
2. Write all numbers as the product of its prime factors
| Prime factors of 1485 | = | 33 . 5 . 11 |
3. Choose the common prime factors with the lowest exponent
Common prime factors: 3 , 5 , 11
Common prime factors with the lowest exponent: 33, 51, 111
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 = 33. 51. 111 = 1485
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