Calculate the Greatest Common Factor or GCF of 375 and 1575
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The instructions to find the GCF of 375 and 1575 are the next:
1. Decompose all numbers into prime factors
375 | 3 |
125 | 5 |
25 | 5 |
5 | 5 |
1 |
1575 | 3 |
525 | 3 |
175 | 5 |
35 | 5 |
7 | 7 |
1 |
2. Write all numbers as the product of its prime factors
Prime factors of 375 | = | 3 . 53 |
Prime factors of 1575 | = | 32 . 52 . 7 |
3. Choose the common prime factors with the lowest exponent
Common prime factors: 3 , 5
Common prime factors with the lowest exponent: 31, 52
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 = 31. 52 = 75
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