3 is the only common factor.
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The GCF is 3.
No. Both 57 and 111 are composite numbers. Factors of 57 are 1, 3, 19 and 57. Factors of 111 are 1, 3, 37 and 111. They share two factors 1 and 3, so they are not relatively prime either.
The factors of 111 are: 1, 3, 37 and 111.The factors of 37 are: 1, and 37.The common factors of 111 and 37 are: 1, and 37.The greatest common common factor of 111 and 37 is: 37.
3
1 and 3