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Question
Find Greatest Common Divisor of 1160718174 and 316258250, using prime factorization.
Answer
The GCD of given numbers is 1078.
Explanation
Step 1 : Find prime factorization of each number.
1160718174=316258250=2⋅3⋅3⋅3⋅3⋅3⋅3⋅7⋅7⋅7⋅11⋅2112⋅5⋅5⋅5⋅7⋅7⋅11⋅2347(view steps on how to factor 1160718174 and 316258250. )
Step 2 : Put a box around factors that are common for all numbers:
1160718174=316258250=2⋅3⋅3⋅3⋅3⋅3⋅3⋅7⋅7⋅7⋅11⋅2112⋅5⋅5⋅5⋅7⋅7⋅11⋅2347Step 3 : Multiply the boxed numbers together:
GCD=2⋅7⋅7⋅11=1078
This solution can be visualized using a Venn diagram.
0,0
1160718174
316258250
2
7
7
11
3
3
3
3
3
3
7
211
5
5
5
2347
The GCD equals the product of the numbers at the intersection.
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