Calculate the Greatest Common Factor or GCF of 2660
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The instructions to find the GCF of 2660 are the next:
1. Decompose all numbers into prime factors
2660 | 2 |
1330 | 2 |
665 | 5 |
133 | 7 |
19 | 19 |
1 |
2. Write all numbers as the product of its prime factors
Prime factors of 2660 | = | 22 . 5 . 7 . 19 |
3. Choose the common prime factors with the lowest exponent
Common prime factors: 2 , 5 , 7 , 19
Common prime factors with the lowest exponent: 22, 51, 71, 191
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. 71. 191 = 2660
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