Trigesimal numeral system

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The trigesimal numeral system is a positional numeral system using the powers of 30 (see A009974) rather than the powers of 10.

See also

Standard positional numeral systems

Base	Latin (-ary) (Cardinals)	Latin (-al) (Ordinals)	Greek (-al)	Greek (-adic)	Usage
1	Unary, Primary	Primal		Monadic, Henadic
2	Binary, Secondary	Dual		Dyadic
3	Ternary, Tertiary	Tertial		Triadic
4	Quaternary	Quartal		Tetradic
5	Quinary	Quintal	Pental	Pentadic
6	Senary	Sextal	Hexal	Hexadic
7	Septenary	Septimal	Heptal	Heptadic
8	Octonary	Octonal	Octal	Octadic
9	Nonary, Novary	Nonal, Noval		Enneadic
10	Denary	Decimal	Decimal	Decadic
11	Undenary, Unodenary	Undecimal, Unodecimal	Henadecimal	Hendecadic
12	Duodenary, Dozenary	Duodecimal, Dozenal	Dyadecimal	Dyadecadic
13	Tredenary, Triodenary	Tredecimal, Triodecimal	Tridecimal	Triadecadic
14	Quadrodenary, Quattuordenary	Quadrodecimal, Quattuordecimal	Tetradecimal	Tetradecadic
15	Quindenary	Quindecimal	Pentadecimal	Pentadecadic
16	Sedenary, Sexadenary	Sedecimal, Sexadecimal	Hexadecimal	Hexadecadic
17	Septendenary	Septendecimal	Heptadecimal	Heptadecadic
18	Octodenary	Octodecimal	Octadecimal	Octadecadic
19	Nonadenary	Nonadecimal, Novodecimal	Enneadecimal	Enneadecadic
20	Vigenary	Vigesimal		Icosadic
24		Quadrivigesimal		Tetraicosadic
26		Sexavigesimal		Hexaicosadic
27		Septemvigesimal		Heptaicosadic
30	Tricenary	Trigesimal		Triacontadic
32		Duotrigesimal		Dyatriacontadic
36		Sexatrigesimal		Hexatriacontadic
40	Quadragenary	Quadragesimal	Tetragesimal	Tetracontadic
50	Quincagenary	Quincagesimal	Pentagesimal	Pentacontadic
60	Sexagenary	Sexagesimal	Hexagesimal	Hexacontadic
64	Quadrisexagenary	Quadrisexagesimal	Tetrahexagesimal	Tetrahexacontadic	Base64 encoding
70	Septuagenary	Septuagesimal	Heptagesimal	Heptacontadic
80	Octogenary	Octogesimal	Octagesimal	Octacontadic
90	Nonagenary	Nonagesimal	Enneagesimal	Enneacontadic
100	Centenary	Centesimal, Centimal	Centimal	Hecatontadic
200	Ducenary, Bicentenary	Dugentesimal, Bicentimal	Dyacentesimal, Dyacentimal	Dyahecatontadic
300	Trecenary, Tercentenary	Tregentesimal, Tercentimal	Tricentesimal, Tricentimal	Triahecatontadic
400	Quadringenary, Quadricentenary	Quadringentesimal, Quattrocentimal	Tetracentesimal, Tetracentimal	Tetrahecatontadic
500	Quingenary, Quinquocentenary	Quingentesimal, Quincentimal	Pentacentesimal, Pentacentimal	Pentahecatontadic
600	Sexingenary, Sexcentenary	Sexingesimal, Sescentimal	Hexacentesimal, Hexacentimal	Hexahecatontadic
700	Septingenary, Septcentenary	Septingentesimal, Septuacentimal	Heptacentesimal, Heptacentimal	Heptahecatontadic
800	Octingenary, Octocentenary	Octingentesimal, Octocentimal	Octacentesimal, Octacentimal	Octahecatontadic
900	Nongenary, Nonacentenary	Noningentesimal, Novacentimal	Enneacentesimal, Enneacentimal	Enneahecatontadic
1000	Millenary	Millesimal		Chiliadic
10000				Myriadic