--- title: "BIP39 Word #1667: space — Seed Phrase Mnemonic Word" url: "https://bip39-phrase.com/bip39-word/space/" language: "en" updated: "2026-10-19T00:00:00+00:00" --- Word #1667 11010000010 # space — BIP39 word #1667 "**space**" is word #1667 of the 2048 words in the official BIP39 English wordlist, between [south](/bip39-word/south/) and [spare](/bip39-word/spare/). In a seed phrase it stands for the 11-bit value `11010000010`, decimal index 1666\. /speɪs/ · _noun:_ an empty area, or the universe beyond the earth's atmosphere [Russian](/ru/ "The BIP39 wordlist with Russian translations"): пространство ## Binary Representation Four 1-bits and seven 0-bits; 330 of the 2048 indexes have exactly four 1-bits. One wrong bit turns it into (leftmost bit first): [expect](/bip39-word/expect/)[motion](/bip39-word/motion/)[utility](/bip39-word/utility/)[scare](/bip39-word/scare/)[success](/bip39-word/success/)[stairs](/bip39-word/stairs/)[spoil](/bip39-word/spoil/)[spend](/bip39-word/spend/)[speak](/bip39-word/speak/)[source](/bip39-word/source/)[spare](/bip39-word/spare/) Position Hex Index 0x682 4-Letter Prefix spac ## About "space" in BIP39 - "space" has 5 letters, but the first four, **"spac"**, already identify it, because **"spa"** also begins [spare](/bip39-word/spare/), [spatial](/bip39-word/spatial/) and [spawn](/bip39-word/spawn/). - **"spac"** is unique only within the English list: it also begins spacieux in the [French list](/french/), so a four-letter backup should say which list it uses. - "space" appears in one of the 24 official English [test vectors](https://github.com/trezor/python-mnemonic/blob/master/vectors.json) of BIP39: vector #24 (word 18 of 24). Every official vector passes the [checksum checker](/bip39-checksum-checker/), and [How BIP39 works](/how-bip39-works/) shows how the entropy turns into such words. Official test vector #24 [void](/bip39-word/void/) [come](/bip39-word/come/) [effort](/bip39-word/effort/) [suffer](/bip39-word/suffer/) [camp](/bip39-word/camp/) [survey](/bip39-word/survey/) [warrior](/bip39-word/warrior/) [heavy](/bip39-word/heavy/) [shoot](/bip39-word/shoot/) [primary](/bip39-word/primary/) [clutch](/bip39-word/clutch/) [crush](/bip39-word/crush/) [open](/bip39-word/open/) [amazing](/bip39-word/amazing/) [screen](/bip39-word/screen/) [patrol](/bip39-word/patrol/) [group](/bip39-word/group/) space [point](/bip39-word/point/) [ten](/bip39-word/ten/) [exist](/bip39-word/exist/) [slush](/bip39-word/slush/) [involve](/bip39-word/involve/) [unfold](/bip39-word/unfold/) ## Word #1667 in the Other 9 BIP39 Wordlists [Czech](/czech/) tancovat [French](/french/) rincer [Italian](/italian/) simulato [Japanese](/japanese/) ひろう [Korean](/korean/) 참석 [Portuguese](/portuguese/) resgatar [Spanish](/spanish/) sagaz [Traditional Chinese](/chinese-traditional/) 鳴 [Simplified Chinese](/chinese-simplified/) 鸣 ## Similar Words — Check Carefully During Recovery 2 BIP39 words differ from "space" by just a single letter — the most common source of typos when a seed phrase is entered by hand: [spare](/bip39-word/spare/)[spice](/bip39-word/spice/) Words sharing the first three letters "spa": [spare](/bip39-word/spare/)[spatial](/bip39-word/spatial/)[spawn](/bip39-word/spawn/) ## More BIP39 Words Starting with "S" [ #1663 sound ](/bip39-word/sound/)[ #1664 soup ](/bip39-word/soup/)[ #1665 source ](/bip39-word/source/)[ #1666 south ](/bip39-word/south/)[ #1668 spare ](/bip39-word/spare/)[ #1669 spatial ](/bip39-word/spatial/)[ #1670 spawn ](/bip39-word/spawn/)[ #1671 speak ](/bip39-word/speak/) [View all words starting with "S" ](/bip39-words/s/) ## Seed phrase, key and recovery guides - [Is a Seed Phrase Case Sensitive? BIP39 Words vs Passphrase](/is-seed-phrase-case-sensitivity-really-important/) - [BIP-444 (Now BIP 110): Reduced Data Temporary Softfork Explained](/bip-444-reduced-data-temporary-softfork/) - [Metal Seed Phrase Backup: Steel Plates, Tiles and Tests](/metal-seed-phrase-backup/) [ Full BIP39 Wordlist ](/)