369 factors to [3 3 41]
279 factors to [3 3 31]
207 factors to [3 3 23]
Common factors: [3 3]
9 is the answer.◄
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The greatest common factor of 138 and 207 is 69.
It is: 207
The GCF of 69 and 207 is 69 1*69 = 69 3*69 = 207
The factors of 184 are: 1, 2, 4, 8, 23, 46, 92, 184 The factors of 207 are: 1, 3, 9, 23, 69, 207 The common factors are: 1, 23 The Greatest Common Factor: GCF = 23
115 and 207 are relatively prime because they have no common factor greater than 1.