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:
Open 500.part001.rar (or 500.part001 if extensions are hidden) using WinRAR or 7-Zip [1]. 500.part115.rar
This format requires all parts (1 through 115) to be present in the same folder to reconstruct the original data [1]. If you only have part 115, you cannot extract the file