Calculate the Greatest Common Factor or GCF of 403
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The instructions to find the GCF of 403 are the next:
1. Decompose all numbers into prime factors
403 | 13 |
31 | 31 |
1 |
2. Write all numbers as the product of its prime factors
Prime factors of 403 | = | 13 . 31 |
3. Choose the common prime factors with the lowest exponent
Common prime factors: 13 , 31
Common prime factors with the lowest exponent: 131, 311
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 = 131. 311 = 403
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