Word #171 00010101010

best — BIP39 word #171

"best" is word #171 of the 2048 words in the official BIP39 English wordlist, between benefit and betray. In a seed phrase it stands for the 11-bit value 00010101010, decimal index 170.

/bɛst/ · adjective: of the highest quality or most suitable

Russian: лучший

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):

next fetch crystal aim bubble bacon blanket begin beyond bench betray

Position

#171 of 2048

Hex Index

0x0AA

4-Letter Prefix

best

About "best" in BIP39

"best" has 4 letters, but the first three, "bes", already identify it, because "be" also begins 19 other words, among them beach, bean, beauty and because. Three letters are enough for only 604 of the 2048 words.
"best" is unique only within the English list: it also begins bestia in the Spanish list and bestie in the Czech list, so a four-letter backup should say which list it uses.