The GCF is 13.
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The greatest common factor of 78 and 104 is 26. Factors of 78: 1, 2, 3, 6, 13, 26, 39, 78 Factors of 104: 1, 2, 4, 8, 13, 26, 52, 104 The GCF of 78 and 104 is 26.
Since 39 is a factor of 78, it is automatically the GCF.
The GCF of 78 and 117 is 39Factors of 78: 1 2 3 6 13 26 39 78Factors of 117: 1 3 9 13 39 117The GCF of 78 and 117 is: 39The GCF is 39.The GCF is 39.
It is: 39
The GCF is 26.