Some natlangs have numbers based on a non-decimal system.

Dzongkha

Dzongkha uses a base-20 system:[1]

Number Name Definition
1 ciː 200
20 kʰe 201
400 ɲiɕu 202
8,000 kʰecʰe 203
160,000 jãːcʰe 204

Hawaiian

In Hawaiian, several numbers with first significant digit 4 have their own names:[2]

Number Name Definition
4 ha 4 × 100
40 kanaha 4 × 101
400 lau 4 × 102
4,000 mano 4 × 103
40,000 kini 4 × 104
400,000 lehu 4 × 105
4,000,000 nalowale 4 × 106

Kómnzo

Kómnzo uses a base-6 system:[3]

Number Name Definition
1 nämbi 60
6 nimbo 61
36 féta 62
216 tarumba 63
1,296 ntamno 64
7,776 wärämäkä 65
46,656 wi 66

Nahuatl

Nahuatl uses a base-20 system:[4]

Number Name Definition
1 ce 200
20 cempohualli 201
400 centzontli 202
8,000 cenxiquipilli 203

Sources

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