Calculate the Greatest Common Factor or GCF of 2 and 920
Sponsors
The instructions to find the GCF of 2 and 920 are the next:
1. Decompose all numbers into prime factors
2 | 2 |
1 |
920 | 2 |
460 | 2 |
230 | 2 |
115 | 5 |
23 | 23 |
1 |
2. Write all numbers as the product of its prime factors
Prime factors of 2 | = | 2 |
Prime factors of 920 | = | 23 . 5 . 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: