Calculate the Greatest Common Factor or GCF of 1805
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The instructions to find the GCF of 1805 are the next:
1. Decompose all numbers into prime factors
1805 | 5 |
361 | 19 |
19 | 19 |
1 |
2. Write all numbers as the product of its prime factors
Prime factors of 1805 | = | 5 . 192 |
3. Choose the common prime factors with the lowest exponent
Common prime factors: 5 , 19
Common prime factors with the lowest exponent: 51, 192
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 = 51. 192 = 1805
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