A file generated by an automated system, like a backup or a database export, where the number represents a timestamp or ID.
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Because anyone can name a RAR file whatever they like, a name like "46857.rar" usually suggests one of the following: A file generated by an automated system, like
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A file with the extension is a Roshal Archive compressed file. These are "containers" used to hold one or more files in a smaller, compressed format to save storage space or make them easier to send over the internet. RAR files are highly efficient for: