0
Just by looking at it, without applying any exotic tools or analytical procedures, we can see that it's divisible by 5 (because it ends in 5), and it's also divisible by 3 (because the sum of its digits is divisible by 3). So we already know that it can't be prime, regardless of how many other factors it may have.
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Earn +20 ptsQ: Is 1005 a composite number or a prime number?
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Is 1005 a prime or composite?
Composite. All positive, whole numbers greater than five and ending in 0, 2, 4, 5, 6 or 8 are composite.
Is 163 prime or composite?
The number is not COMPOSITE. Instead, it is a prime number.
Is 432 composite or a prime number?
Composite (the only even number that is prime is2).
Is the number 36 prime or composite?
Composite
What is neither a prime nor a composite number?
It is 1 that is neither a prime or a composite number The number 1 is neither prime nor composite.
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