500.part115.rar -

A container format that supports data compression, error recovery, and file spanning (splitting large files into smaller parts) [1].

If you only have part 115, you cannot extract the file. You must have parts 1 through 115 (or as many as exist in the set) [1]. 2. Required Tools You need a file archiver capable of handling RAR5 formats: 500.part115.rar

The official, most reliable tool for multi-part RAR files [1]. A container format that supports data compression, error