This indicates the encoder/uploader, often associated with high-quality, efficient HEVC releases that optimize compression for streaming or storage-conscious viewers.
The n0m1 group operates within the "warez scene" — a global, underground community that standardizes the release of digital media. Groups like n0m1 follow strict rules to create efficient, high-quality files. This particular release is part of a larger trend where "Scene" and "P2P" groups encode older TV shows like Prison Break into modern codecs for archiving, as the original 6-disc Blu-ray set is ~961 minutes long. Prison.break.season.2.s02.1080p.bluray.hevc.x265.n0m1 72