Calculate the Greatest Common Factor or GCF of 2640
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The instructions to find the GCF of 2640 are the next:
1. Decompose all numbers into prime factors
2640 | 2 |
1320 | 2 |
660 | 2 |
330 | 2 |
165 | 3 |
55 | 5 |
11 | 11 |
1 |
2. Write all numbers as the product of its prime factors
Prime factors of 2640 | = | 24 . 3 . 5 . 11 |
3. Choose the common prime factors with the lowest exponent
Common prime factors: 2 , 3 , 5 , 11
Common prime factors with the lowest exponent: 24, 31, 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 = 24. 31. 51. 111 = 2640
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