Which natural number is neither prime nor composite

- Which of the following natural number is neither prime nor composite
- Write a natural number which is neither prime nor composite
- Is the only natural number which is neither prime nor composite
- Natural number but x is neither prime nor composite
- Natural number but neither prime nor composite
- Dash is the only natural number which is neither prime nor composite
- The hcf of a natural number which is neither prime nor composite
- There does not exist a natural number which is neither prime nor composite
- N + n
- N + i