Based on technical analysis from compression community discussions on ENCODE.SU , this archive has the following characteristics: standard 7z archive.

While 7z provides maximum compression and security , it is often slower and less universally compatible than the ZIP format . Files like LoLand183ms.7z are typically used in scenarios where storage space is the priority over ease of access across different platforms.

LZMA2:1536m . This uses a massive 1536 MB dictionary size, which was first introduced in 7-Zip 15.05 beta in 2015.