--- title: "BIP39 Word #1739: sun — Seed Phrase Mnemonic Word" url: "https://bip39-phrase.com/bip39-word/sun/" language: "en" updated: "2026-10-19T00:00:00+00:00" --- Word #1739 11011001010 # sun — BIP39 word #1739 "**sun**" is word #1739 of the 2048 words in the official BIP39 English wordlist, between [summer](/bip39-word/summer/) and [sunny](/bip39-word/sunny/). In a seed phrase it stands for the 11-bit value `11011001010`, decimal index 1738\. /sʌn/ · _noun:_ the star that gives light and heat to the earth [Russian](/ru/ "The BIP39 wordlist with Russian translations"): солнце ## Binary Representation Six 1-bits and five 0-bits; 462 of the 2048 indexes have exactly six 1-bits. One wrong bit turns it into (leftmost bit first): [flock](/bip39-word/flock/)[off](/bip39-word/off/)[welcome](/bip39-word/welcome/)[sing](/bip39-word/sing/)[spend](/bip39-word/spend/)[tail](/bip39-word/tail/)[swap](/bip39-word/swap/)[success](/bip39-word/success/)[supply](/bip39-word/supply/)[suit](/bip39-word/suit/)[sunny](/bip39-word/sunny/) Position Hex Index 0x6CA 4-Letter Prefix sun ## About "sun" in BIP39 - All three letters of "sun" also begin longer words: [sunny](/bip39-word/sunny/) and [sunset](/bip39-word/sunset/). So "sun" cannot be shortened, and a backup that keeps the first four letters of each word stores it as **"sun"** but sunny as **"sunn"**. - "sun" appears in one of the 24 official English [test vectors](https://github.com/trezor/python-mnemonic/blob/master/vectors.json) of BIP39: vector #22 (word 9 of 12). 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 #22 [vessel](/bip39-word/vessel/) [ladder](/bip39-word/ladder/) [alter](/bip39-word/alter/) [error](/bip39-word/error/) [federal](/bip39-word/federal/) [sibling](/bip39-word/sibling/) [chat](/bip39-word/chat/) [ability](/bip39-word/ability/) sun [glass](/bip39-word/glass/) [valve](/bip39-word/valve/) [picture](/bip39-word/picture/) ## Word #1739 in the Other 9 BIP39 Wordlists [Czech](/czech/) uboze [French](/french/) séduire [Italian](/italian/) spillato [Japanese](/japanese/) へいたく [Korean](/korean/) 출근 [Portuguese](/portuguese/) sanidade [Spanish](/spanish/) sobre [Traditional Chinese](/chinese-traditional/) 雕 [Simplified Chinese](/chinese-simplified/) 雕 ## Similar Words — Check Carefully During Recovery 3 BIP39 words differ from "sun" by just a single letter — the most common source of typos when a seed phrase is entered by hand: [fun](/bip39-word/fun/)[gun](/bip39-word/gun/)[run](/bip39-word/run/) Read aloud, "sun" /sʌn/ is one sound away from these 7 words: [one /wʌn/](/bip39-word/one/)[scene /siːn/](/bip39-word/scene/)[sign /saɪn/](/bip39-word/sign/)[soon /suːn/](/bip39-word/soon/)[such /sʌʧ/](/bip39-word/such/)[sudden /ˈsʌdn/](/bip39-word/sudden/)[sunny /ˈsʌni/](/bip39-word/sunny/) Words sharing the first three letters "sun": [sunny](/bip39-word/sunny/)[sunset](/bip39-word/sunset/) ## More BIP39 Words Starting with "S" [ #1735 sugar ](/bip39-word/sugar/)[ #1736 suggest ](/bip39-word/suggest/)[ #1737 suit ](/bip39-word/suit/)[ #1738 summer ](/bip39-word/summer/)[ #1740 sunny ](/bip39-word/sunny/)[ #1741 sunset ](/bip39-word/sunset/)[ #1742 super ](/bip39-word/super/)[ #1743 supply ](/bip39-word/supply/) [View all words starting with "S" ](/bip39-words/s/) ## Seed phrase, key and recovery guides - [xpub, ypub and zpub: Extended Public Keys Explained](/xpub-ypub-zpub/) - [SLIP-39 vs BIP39: Shamir Backup and 20-Word Shares Explained](/slip39-vs-bip39/) - [Why You Should Never Create Your Own Seed Phrase](/why-you-should-never-create-your-own-seed-phrase/) [ Full BIP39 Wordlist ](/)