Newer RAR naming conventions use the .partXX.rar pattern.
RAR (Roshal Archive), a proprietary compression format. sc23792-CTAGOHOv10260.part04.rar
RAR archives provide high-quality compression and can include features like AES-256 encryption or recovery records to repair damaged data. How to Use This File Newer RAR naming conventions use the
The file is the fourth segment of a larger multi-volume RAR archive. Such archives are created by splitting one or more large files into smaller parts for easier storage, sharing, or downloading. File Identity and Characteristics sc23792-CTAGOHOv10260.part04.rar
You cannot open this segment individually; it contains only a fraction of the total data.
Multi-volume (Split) Archive. The ".part04" suffix indicates it is not a standalone file but a piece of a sequence.