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The greatest common factor of 68 and 104 is 4

68 = 2 x 2 x 17; these are all prime factors.

104 = 2 x 2 x 2 x 13, and these are all prime factors.

Therefore, the greatest common factor is the part they share in common, 2 x 2 = 4

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∙ 10y ago
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