9 and 8
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2,4,6,8,9,12,18, 24,36,72
Composite. (It has more than 2 factors) 35 is composite
composite
72 factors to [2 2 2 3 3] 28 factors to [2 2 7] 88 factors to [2 2 2 11] Common factors [2 2] Answer is 4. ■
86 is composite, because it has factors other than 1 and itself. The factors of 86 are 1, 2, 43, and 86. All even numbers greater than 2 are composite.