21/19

Interval information

Ratio	21/19
Factorization	3 × 7 × 19-1
Monzo	[0 1 0 1 0 0 0 -1⟩
Size in cents	173.2679¢
Name	large neutral undevicesimal second
FJS name	[math]\displaystyle{ \text{M2}^{7}_{19} }[/math]
Special properties	reduced
Tenney norm (log2 nd)	8.64024
Weil norm (log2 max(n, d))	8.78463
Wilson norm (sopfr(nd))	29
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21/19 is the large neutral undevicesimal second. Its octave complement is the minor neutral undevicesimal seventh 38/21.

See also

• 38/21 – its octave complement
• Gallery of just intervals