Q: Is 81,181 a Composite Number?

 A: No, 81,181 is not a composite number; it is a prime number.

Why is 81,181 not a composite number?

A composite number is a number that can be divided evenly by more numbers than 1 and itself. It is the opposite of a prime number.

The number 81,181 can be evenly divided by 1 and 81,181, with no remainder.

Since 81,181 can be divided by just 1 and 81,181, it is not a composite number.


More Examples

Number 81,17981,18081,18281,183
Composite? yesyesyesyes
  • All positive natural numbers are either a prime number or a composite number (except the number 1, which is neither).

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