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Question
Find Greatest Common Divisor of 6666600000 and 6666666666, using prime factorization.
Answer
The GCD of given numbers is 66666.
Explanation
Step 1 : Find prime factorization of each number.
6666600000=6666666666=2⋅2⋅2⋅2⋅2⋅2⋅3⋅5⋅5⋅5⋅5⋅5⋅41⋅2712⋅3⋅11⋅41⋅271⋅9091(view steps on how to factor 6666600000 and 6666666666. )
Step 2 : Put a box around factors that are common for all numbers:
6666600000=6666666666=2⋅2⋅2⋅2⋅2⋅2⋅3⋅5⋅5⋅5⋅5⋅5⋅41⋅2712⋅3⋅11⋅41⋅271⋅9091Step 3 : Multiply the boxed numbers together:
GCD=2⋅3⋅41⋅271=66666
This solution can be visualized using a Venn diagram.
0,0
6666600000
6666666666
2
3
41
271
2
2
2
2
2
5
5
5
5
5
11
9091
The GCD equals the product of the numbers at the intersection.
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