Calculate the Greatest Common Factor or GCF of 65, 143 and 156
Sponsors
The instructions to find the GCF of 65, 143 and 156 are the next:
1. Decompose all numbers into prime factors
| 65 | 5 |
| 13 | 13 |
| 1 |
| 143 | 11 |
| 13 | 13 |
| 1 |
| 156 | 2 |
| 78 | 2 |
| 39 | 3 |
| 13 | 13 |
| 1 |
2. Write all numbers as the product of its prime factors
| Prime factors of 65 | = | 5 . 13 |
| Prime factors of 143 | = | 11 . 13 |
| Prime factors of 156 | = | 22 . 3 . 13 |
3. Choose the common prime factors with the lowest exponent
Common prime factors: 13
Common prime factors with the lowest exponent: 131
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 = 131 = 13
Also calculates the: