The GCF is 7.
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There cannot be a common factor of just one number. To be common there need to be at least two numbers. If you find all the factors of two or more numbers, and you find some factors are the same ("common"), then the largest of those common factors is the Greatest Common Factor.
The greatest common factor (GCF) is often also called the greatest common divisor (GCD) or highest common factor (HCF). Keep in mind that these different terms all refer to the same thing: the largest integer which evenly divides two or more numbers.Since 161 is a single number, you could say that it shares all of its factors with itself. So the greatest factor of 161 is 161
The greatest common factor (GCF) of 98 and 133 is 7. To find the GCF, you need to determine the factors of each number. The factors of 98 are 1, 2, 7, 14, 49, and 98. The factors of 133 are 1, 7, 19, and 133. The largest number that appears in both lists is 7, making it the GCF of 98 and 133.
All of the factors of A.
The common factors of 25 and 50 are 1, 5 and 25.All of them.