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Question
Find Greatest Common Divisor of 33728 and 26880, using prime factorization.
Answer
The GCD of given numbers is 64.
Explanation
Step 1 : Find prime factorization of each number.
33728=26880=2⋅2⋅2⋅2⋅2⋅2⋅17⋅312⋅2⋅2⋅2⋅2⋅2⋅2⋅2⋅3⋅5⋅7(view steps on how to factor 33728 and 26880. )
Step 2 : Put a box around factors that are common for all numbers:
33728=26880=2⋅2⋅2⋅2⋅2⋅2⋅17⋅312⋅2⋅2⋅2⋅2⋅2⋅2⋅2⋅3⋅5⋅7Step 3 : Multiply the boxed numbers together:
GCD=2⋅2⋅2⋅2⋅2⋅2=64
This solution can be visualized using a Venn diagram.
0,0
33728
26880
2
2
2
2
2
2
17
31
2
2
3
5
7
The GCD equals the product of the numbers at the intersection.
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