It is 13.
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The GCF is 13.
The HCF of the given numbers is 13
13 is the highest common factor of 78, 91 and 156.
The GCF is 13.
Factors of 52: 1, 2, 4, 13, 26, 52 Factors of 143: 1, 11, 13, 143 Factors of 156: 1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156 GCF (52, 143, 156) = 13