# Page Not Found

The URL `en/special_functions/factor` does not exist.

You might be looking for one of these pages:
- [factor](https://nelson-9.gitbook.io/nelson/markdown/en/special_functions/factor.md)
- [factor](https://nelson-9.gitbook.io/nelson/markdown/fr/special_functions/factor.md)
- [factorial](https://nelson-9.gitbook.io/nelson/markdown/en/elementary_functions/factorial.md)
- [factorial](https://nelson-9.gitbook.io/nelson/markdown/fr/elementary_functions/factorial.md)
- [cross](https://nelson-9.gitbook.io/nelson/markdown/en/special_functions/cross.md)

## How to find the correct page

1. **Browse the full index**: [/sitemap.md](https://nelson-9.gitbook.io/nelson/sitemap.md) - Complete documentation index
2. **View the full content**: [/llms-full.txt](https://nelson-9.gitbook.io/nelson/llms-full.txt) - Full content export

## Tips for requesting documentation

- For markdown responses, append `.md` to URLs (e.g., `/nelson/markdown/en/special_functions/factor.md`)
- Use `Accept: text/markdown` header for content negotiation