Likely LZMA or LZMA2 , which offers high compression ratios for large data groups.
7-Zip / Discussion / Open Discussion: Repair corrupt 7z archive KP01_15.7z
Supports AES-256 encryption, multi-volume splitting, and files up to 16 exabytes. Handling and Security Recommendations Likely LZMA or LZMA2 , which offers high