Bip39 length https://www.sbnation.com/users/typhanhmdy Although it takes advantage of BIP32 approach it is possible to nevertheless import BIP39 seeds into Electrum wallet. Also other than BIp32 There's BIP44 version which some wallet use to the era of seeds. BIP39 improves wallet security by making backups dependable, simple, and resistant to faults. https://social-lyft.com/story10021797/bip39-app-a-simple-key-for-bip39-github-unveiled-https-linktr-ee-bip39