: Use a service like VirusTotal to check if the archive contains malicious code.
: Files with the .rar extension are frequently used by cybercriminals to hide malware. If you did not expect this file or found it on an unverified site, it is highly recommended to scan it with an antivirus before opening. Common "BNTMN" Contexts
a note on iteration sequences for asymptotically - DergiPark