Ot2000 | Multi.ext.1080p.r-mg.part13.rar

Knowing this can help me provide better guidance or alternative sources.

If you only have part 13, you cannot extract the file. You must have all parts present in the same folder. To help you further, could you let me know: Where did you find this file name (a forum, tracker, etc.)? ot2000 MULTi.EXT.1080p.R-MG.part13.rar

indicates this is one part of a larger file that needs to be downloaded in its entirety (usually parts 1 to ) and extracted together to function. Knowing this can help me provide better guidance