Q: Is 1,311 a Composite Number?

 A: Yes, 1,311 is a composite number.

Why is 1,311 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 1,311 can be evenly divided by 1 3 19 23 57 69 437 and 1,311, with no remainder.

Since 1,311 cannot be divided by just 1 and 1,311, it is a composite number.


More Examples

Number 1,3091,3101,3121,313
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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