Calculate the Greatest Common Factor or GCF of 398

The instructions to find the GCF of 398 are the next:

1. Decompose all numbers into prime factors

2. Write all numbers as the product of its prime factors

3. Choose the common prime factors with the lowest exponent

Common prime factors: 2 , 199

Common prime factors with the lowest exponent: 2¹, 199¹

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. 199¹ = 398

Also calculates the:

↑ Back to top