It is: 39
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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.
The GCF is 13.
The GCF is 13.
To find the Greatest Common Factor (GCF) of 78, 117, and 156, you need to first find the prime factorization of each number. 78 = 2 * 3 * 13 117 = 3 * 3 * 13 156 = 2 * 2 * 3 * 13 Next, identify the common prime factors among the numbers: 3 and 13. The GCF of 78, 117, and 156 is the product of these common prime factors, which is 3 * 13 = 39.
The GCF is 9.