For a number to be prime it should not be divisible by any number except itself and number 1038 can be divided by 2,3, eg; so 1038 is not a Prime number.
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1038 is divisible by 2, so it is a composite number because it has more factors than 1 and itself. No even number greater than 2 is a prime number. All factors of 1038 are 1, 2, 3, 6, 173, 346, 519, and 1038.
A prime number can be multiplied by any other numbers because all whole numbers are the product of prime numbers.
Prime numbers have two factors. All square numbers (other than 1) have more than that.
85 is a composite number because it has more than two factors whereas prime numbers have only two factors
Because 2 can only be multiplied by 1 and itself.