A file with these characteristics generally indicates it was compressed using the or LZMA2 algorithm with "Ultra" or manual high-end settings.

bytes = 128 MB), a setting used to achieve maximum compression ratios for large datasets.

: Extracting a file with a 128 MB dictionary typically requires at least 128 MB of RAM , plus additional overhead depending on the number of threads used. Common Use Cases Does 7z compress better than zip? - Microsoft Community Hub

: To extract via terminal, use the command: 7z x 27n.7z