Calculate the Greatest Common Factor or GCF of 28, 32, 54 and 92
Sponsors
The instructions to find the GCF of 28, 32, 54 and 92 are the next:
1. Decompose all numbers into prime factors
| 28 | 2 |
| 14 | 2 |
| 7 | 7 |
| 1 |
| 32 | 2 |
| 16 | 2 |
| 8 | 2 |
| 4 | 2 |
| 2 | 2 |
| 1 |
| 54 | 2 |
| 27 | 3 |
| 9 | 3 |
| 3 | 3 |
| 1 |
| 92 | 2 |
| 46 | 2 |
| 23 | 23 |
| 1 |
2. Write all numbers as the product of its prime factors
| Prime factors of 28 | = | 22 . 7 |
| Prime factors of 32 | = | 25 |
| Prime factors of 54 | = | 2 . 33 |
| Prime factors of 92 | = | 22 . 23 |
3. Choose the common prime factors with the lowest exponent
Common prime factors: 2
Common prime factors with the lowest exponent: 21
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 = 21 = 2
Also calculates the: