21ed5/2

Prime factorization

3 × 7

Step size

75.5387 ¢

Octave

16\21ed5/2 (1208.62 ¢)
(semiconvergent)

Twelfth

25\21ed5/2 (1888.47 ¢)
(semiconvergent)

Consistency limit

6

Distinct consistency limit

6

21ed5/2 is the equal division of the 5/2 interval into 21 parts of approximately 75.539 cents each. It roughly corresponds to 16edo.

Theory

From a no-threes point of view, 21ed5/2 tempers out 50/49 in the 7-limit (being a jubilic system similar to 13ed5/2), 625/616 and 176/175 in the 11-limit, and 143/140, 715/686 and 847/845 in the 13-limit.