File names using this format are common for digital media listings on Japanese content marketplaces. The alphanumeric prefix usually categorizes the type of distribution, while the numerical string serves as a reference code within a database to distinguish one entry from another.
Based on the text , this refers to a specific video file hosted on the FC2 Content Market, a Japanese platform that sells digital content. FC2PPV: Indicates it is a Pay-Per-View video.
This is the unique identification number for that particular video.