Base 30

Base 30 or trigesimal is a positional numeral system using 30 as the radix. Digits in this base can be represented using the Arabic numerals 0-9 and the Latin letters A-T.

From a mathematical viewpoint, 30 is a convenient choice for a base in that it is divisible by the three smallest prime numbers (2, 3, and 5) and by their multiples 6, 10, and 15 — many vulgar fractions are easily expressed in base 30. On the other hand, base 30 has poor radix economy, and it shares the problem with base 60 of its radix falling between twin primes, resulting in few recurring fractions having short periods.


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  • base — [ baz ] n. f. • XIIe; lat. basis, mot gr. « marche, point d appui » I ♦ A ♦ 1 ♦ Partie inférieure d un corps sur laquelle il porte, il repose. ⇒ appui (point d appui), assiette, assise, 1. dessous, fond, fondement, pied. La base de l édifice… …   Encyclopédie Universelle

  • Base D'or — En mathématiques, le nombre d or, à savoir peut être utilisé comme une base de numération. Ce système est connu sous le nom base d or, ou accessoirement, phinaire (car le symbole pour le nombre d or est la lettre grecque « phi »). Tout… …   Wikipédia en Français

  • base — n Base, basis, foundation, ground, groundwork are comparable when meaning something on which another thing is reared or built or by which it is supported or fixed in place. Base may be applied to the lowest part or bottom of something without… …   New Dictionary of Synonyms

  • base — base·ball; base; base·less; base·lin·er; base·ly; base·man; base·ment; base·ness; de·base; de·base·ment; di·a·base; em·base; gnatho·base; gyno·base; im·base; iso·base; phal·lo·base; rheo·base; rim·base; scle·ro·base; sub·base; sur·base;… …   English syllables

  • base — base1 [bās] n. [ME < OFr bas < L basis,BASIS] 1. the thing or part on which something rests; lowest part or bottom; foundation 2. the fundamental or main part, as of a plan, organization, system, theory, etc. 3. the principal or essential… …   English World dictionary

  • Base — (b[=a]s), a. [OE. bass, F. bas, low, fr. LL. bassus thick, fat, short, humble; cf. L. Bassus, a proper name, and W. bas shallow. Cf. {Bass} a part in music.] 1. Of little, or less than the usual, height; of low growth; as, base shrubs. [Archaic]… …   The Collaborative International Dictionary of English

  • Base — or BASE may refer to:A base is a mixture of urine n waste so do not eat it* Base meaning bottom, the lowest part of an object* can mean negative, unfavorable or undesirable in nature. Bad; vile; malicious; evil.In mathematics: *Base (mathematics) …   Wikipedia

  • base — 1. a base de. Locución preposicional que, seguida de un sustantivo, expresa que lo denotado por este es el fundamento o componente principal: «Los [tallarines] verdes [...] están hechos a base de albahaca» (Cisneros Mestizaje [Perú 1995]).… …   Diccionario panhispánico de dudas

  • base — (Del lat. basis, y este del gr. βάσις). 1. f. Fundamento o apoyo principal de algo. 2. Conjunto de personas representadas por un mandatario, delegado o portavoz suyo. U. m. en pl.) 3. Lugar donde se concentra personal y equipo, para, partiendo de …   Diccionario de la lengua española

  • Base — Base, n. [F. base, L. basis, fr. Gr. ba sis a stepping, step, a base, pedestal, fr. bai nein to go, step, akin to E. come. Cf. {Basis}, and see {Come}.] 1. The bottom of anything, considered as its support, or that on which something rests for… …   The Collaborative International Dictionary of English


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