Calculate the Greatest Common Factor or GCF of 18, 30 and 52
Sponsors
The instructions to find the GCF of 18, 30 and 52 are the next:
1. Decompose all numbers into prime factors
| 18 | 2 |
| 9 | 3 |
| 3 | 3 |
| 1 |
| 30 | 2 |
| 15 | 3 |
| 5 | 5 |
| 1 |
| 52 | 2 |
| 26 | 2 |
| 13 | 13 |
| 1 |
2. Write all numbers as the product of its prime factors
| Prime factors of 18 | = | 2 . 32 |
| Prime factors of 30 | = | 2 . 3 . 5 |
| Prime factors of 52 | = | 22 . 13 |
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: