: These parts are numbered sequentially (e.g., .part001.rar , .part002.rar ). A file labeled "998" would simply be the 998th segment of a massive download.

: To use the data inside, you must download all parts of the sequence. If any part, such as part 998, is missing or corrupted, the entire archive may fail to open. How to Open a RAR File

The most specific technical reference to "998" in a file context is the . This is a specialized image format used in certain legacy Microsoft Office components and system files like UIRibbon.dll .

To access the contents of any .rar file, you need specialized extraction software: