Calculate the Greatest Common Factor or GCF of 3220
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The instructions to find the GCF of 3220 are the next:
1. Decompose all numbers into prime factors
3220 | 2 |
1610 | 2 |
805 | 5 |
161 | 7 |
23 | 23 |
1 |
2. Write all numbers as the product of its prime factors
Prime factors of 3220 | = | 22 . 5 . 7 . 23 |
3. Choose the common prime factors with the lowest exponent
Common prime factors: 2 , 5 , 7 , 23
Common prime factors with the lowest exponent: 22, 51, 71, 231
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. 231 = 3220
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