IS 243 PRIME OR COMPOSITE
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243 is a composite number because it has more than two factors
243 = 3*3*3*3*3243 = 3*3*3*3*3243 = 3*3*3*3*3243 = 3*3*3*3*3
243 is a multiple of 1,7,21,81
It is a composite number.
It is a composite number.