Calculate the Greatest Common Factor or GCF of 320
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The instructions to find the GCF of 320 are the next:
1. Decompose all numbers into prime factors
320 | 2 |
160 | 2 |
80 | 2 |
40 | 2 |
20 | 2 |
10 | 2 |
5 | 5 |
1 |
2. Write all numbers as the product of its prime factors
Prime factors of 320 | = | 26 . 5 |
3. Choose the common prime factors with the lowest exponent
Common prime factors: 2 , 5
Common prime factors with the lowest exponent: 26, 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 = 26. 51 = 320
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