88 is a composite number because it is an even number. All numbers greater than 8 and less than 100 are composites if they are even numbers, if they are multiples of 3 or 7, or if they end in 5 or 0.
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Composite. All positive, whole numbers greater than two and ending in 0, 2, 4, 6 or 8 are composite.
It is prime
86 is not a prime number, so is a composite.
No 168 is not a prime number it is a composite number
composite
Prime.