Since there are no common prime factors, the GCF of 22 and 147 is 1.
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We see that the common factors are and . The greatest of these is 2
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The GCF is 2.
The GCF is 2.
Answer: 2 One way to determine the greatest common factor is to find all the factors of the numbers and compare them. The factors of 22 are 1, 2, 11, and 22. The factors of 50 are 1, 2, 5, 10, 25, and 50. The common factors are 1 and 2. Therefore, the greatest common factor is 2. The greatest common factor can also be calculated by identifying the common prime factors and multiplying them together. The prime factors of 22 are 2 and 11. The prime factors of 50 are 2, 5, and 5. The prime factors in common are a single 2, so the greatest common factor is 2.