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Answer: 7
Definition: A factor is a divisor - a number that will evenly divide into another number. The greatest common factor of two or more numbers is the largest factor that both numbers have in common.
Method:
One way to determine the common factors and greatest common factor is to find all the factors of the numbers and compare them.
The factors of 133 are 1, 7, 19, and 133.
The factors of 161 are 1, 7, 23, and 161.
The common factors are 1 and 7. Therefore, the greatest common factor is 7.
The GCF is 7.
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Continue Learning about Other Math
What are the common factors of 133 and 161?
They are 1 and 7
What is the highest common factor of 161 and 230?
It is 23
The highest common factor of 77 and 161?
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What are the common factors of 184 and 161?
The common factors of 184 and 161 are: 1 and 23
What are some 3-digit numbers divisible by 7?
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