Calculate the Greatest Common Factor or GCF of 1625
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The instructions to find the GCF of 1625 are the next:
1. Decompose all numbers into prime factors
1625 | 5 |
325 | 5 |
65 | 5 |
13 | 13 |
1 |
2. Write all numbers as the product of its prime factors
Prime factors of 1625 | = | 53 . 13 |
3. Choose the common prime factors with the lowest exponent
Common prime factors: 5 , 13
Common prime factors with the lowest exponent: 53, 131
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 = 53. 131 = 1625
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