Calculate the Greatest Common Factor or GCF of 315
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The instructions to find the GCF of 315 are the next:
1. Decompose all numbers into prime factors
315 | 3 |
105 | 3 |
35 | 5 |
7 | 7 |
1 |
2. Write all numbers as the product of its prime factors
Prime factors of 315 | = | 32 . 5 . 7 |
3. Choose the common prime factors with the lowest exponent
Common prime factors: 3 , 5 , 7
Common prime factors with the lowest exponent: 32, 51, 71
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 = 32. 51. 71 = 315
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