1, 2, 4, 8, 11, 22, 44, 88 DUD...................
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If a number is divisible by both 8 and 11, it will be divisible by 88.
113 x 88 = 9944 The highest four-digit number divisible by 88 is 9944.
88 is divisible by: 1, 2, 4, 8, 11, 22, 44, 88.
1 2 4 8 11 22 44 88
88 is divisible evenly by 2, so cannot be prime. Therefore, 88 must be composite.