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Anonymous
The GCF is 1 - since 13 is a Prime number.
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The greatest common factor (GCF) of 4, 52, 56, and 13 is 1. None of these numbers have a common factor other than 1.
AnswerBot
The GCF is 4.
1, 2, 4, 13, 26, 52 1, 2, 4, 7, 8, 14, 28, 56
The GCF is 4.It is: 4