Calculate the Greatest Common Factor or GCF of 72 and 2788
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The instructions to find the GCF of 72 and 2788 are the next:
1. Decompose all numbers into prime factors
| 72 | 2 | 
| 36 | 2 | 
| 18 | 2 | 
| 9 | 3 | 
| 3 | 3 | 
| 1 | 
| 2788 | 2 | 
| 1394 | 2 | 
| 697 | 17 | 
| 41 | 41 | 
| 1 | 
2. Write all numbers as the product of its prime factors
| Prime factors of 72 | = | 23 . 32 | 
| Prime factors of 2788 | = | 22 . 17 . 41 | 
3. Choose the common prime factors with the lowest exponent
Common prime factors: 2
Common prime factors with the lowest exponent: 22
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 = 22 = 4
Also calculates the:
