---
title: "BIP39 Word #257: cactus — Seed Phrase Mnemonic Word"
url: "https://bip39-phrase.com/bip39-word/cactus/"
language: "en"
updated: "2026-10-19T00:00:00+00:00"
---

Word #257 00100000000 

# cactus — BIP39 word #257

"**cactus**" is word #257 of the 2048 words in the official BIP39 English wordlist, between [cable](/bip39-word/cable/) and [cage](/bip39-word/cage/). In a seed phrase it stands for the 11-bit value `00100000000`, decimal index 256\. 

/ˈkæktəs/  · _noun:_ a desert plant with thick fleshy stems and sharp spines 

[Russian](/ru/ "The BIP39 wordlist with Russian translations"): кактус 

## Binary Representation

A single 1-bit: 256 is a power of two, like the indexes of [ability](/bip39-word/ability/), [able](/bip39-word/able/), [above](/bip39-word/above/), [absurd](/bip39-word/absurd/), [acoustic](/bip39-word/acoustic/), [advice](/bip39-word/advice/), [amount](/bip39-word/amount/), [avoid](/bip39-word/avoid/), [divorce](/bip39-word/divorce/) and [length](/bip39-word/length/).

One wrong bit turns it into (leftmost bit first):

[parade](/bip39-word/parade/)[gas](/bip39-word/gas/)[abandon](/bip39-word/abandon/)[copy](/bip39-word/copy/)[chimney](/bip39-word/chimney/)[catch](/bip39-word/catch/)[capital](/bip39-word/capital/)[canal](/bip39-word/canal/)[calm](/bip39-word/calm/)[cake](/bip39-word/cake/)[cage](/bip39-word/cage/) 

Position

Hex Index

0x100

4-Letter Prefix

cact

## About "cactus" in BIP39

- "cactus" has 6 letters, but the first three, **"cac"**, already identify it, because **"ca"** also begins 41 other words, among them [cabbage](/bip39-word/cabbage/), [cabin](/bip39-word/cabin/), [cable](/bip39-word/cable/) and [cage](/bip39-word/cage/). Three letters are enough for only 604 of the 2048 words.

## Word #257 in the Other 9 BIP39 Wordlists

[Czech](/czech/) dolina 

[French](/french/) boiser 

[Italian](/italian/) branca 

[Japanese](/japanese/) おおい 

[Korean](/korean/) 기름 

[Portuguese](/portuguese/) barraca 

[Spanish](/spanish/) bola 

[Traditional Chinese](/chinese-traditional/) 取 

[Simplified Chinese](/chinese-simplified/) 取 

## More BIP39 Words Starting with "C"

[ #254 cabbage ](/bip39-word/cabbage/)[ #255 cabin ](/bip39-word/cabin/)[ #256 cable ](/bip39-word/cable/)[ #258 cage ](/bip39-word/cage/)[ #259 cake ](/bip39-word/cake/)[ #260 call ](/bip39-word/call/)[ #261 calm ](/bip39-word/calm/)[ #439 cycle ](/bip39-word/cycle/) 

[View all words starting with "C" ](/bip39-words/c/) 

## 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 ](/)