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What is the greatest common factor of 91 and 78?

Updated: 4/28/2022

Wiki User

9y ago

Best Answer

To find the greatest common factor, or GCF, you must first identify the factors for each number.

For 91, its factors are 1, 7, 13, and 91.
For 78, its factors are 1, 2, 3, 6, 13, 26, 39, and 78.
13 is the highest (or greatest) factor they have in common, so the GCF for 91 and 78 is 13.

Wiki User

9y ago
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