If you are using unrar on the command line, use the following command: unar filename.part1.rar
Knowing these details will help me give you a more specific solution. 117.part1.rar
Disclaimer: The search results did not provide specific details on the contents of that specific file (e.g., a "topic 117" file), as file names are often generic. Please ensure you trust the source of this file to prevent security issues. To help you further, could you tell me: If you are using unrar on the command
Compressed collections of photos, videos, or documents. a "topic 117" file)
(e.g., a specific forum, file-sharing site)