It is composite because it can be multiplied more than itself and one.
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82 is composite because it is even. Any number that ends in 0,2,4, 6. or 8 is composite because it is even and all even numbers are composite.
No such combination. Only two prime numbers: 2 and 41
246 is a composite number because it has 8 factors: 1, 2, 3, 6, 82, 123, and 246.
It is prime
86 is not a prime number, so is a composite.