11

This number is a prime.

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In "Western" music's 12-tone scale, ratios of fractions between 2 and 1 with a one-digit denominator that involve 11 are not used. The ratios 11/6, 11/7, 11/8, and 11/9 are not used in "Western" music. Neither are fractions with 11 as the denominator. These notes are not found in the "Western" twelve-tone scale, but might be found in the music of other cultures that use different tuning systems. [Obeidin]

Submitted: 2003-09-23 01:27:43; Last Modified: 2009-04-07 21:46:02.