Calculate the Greatest Common Factor or GCF of 1305
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The instructions to find the GCF of 1305 are the next:
1. Decompose all numbers into prime factors
1305 | 3 |
435 | 3 |
145 | 5 |
29 | 29 |
1 |
2. Write all numbers as the product of its prime factors
Prime factors of 1305 | = | 32 . 5 . 29 |
3. Choose the common prime factors with the lowest exponent
Common prime factors: 3 , 5 , 29
Common prime factors with the lowest exponent: 32, 51, 291
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. 291 = 1305
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