15/2

Interval information

Ratio	15/2
Factorization	2-1 × 3 × 5
Monzo	[-1 1 1⟩
Size in cents	3488.269¢
Name	classic/just major twenty-first
Color name	ccy7, cocoyo 7th
FJS name	[math]\displaystyle{ \text{M21}^{5} }[/math]
Tenney norm (log2 nd)	4.90689
Weil norm (log2 max(n, d))	7.81378
Wilson norm (sopfr(nd))	10
[sound info]
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15/2 is the ratio between the 2nd and 15th harmonics; two octaves above 15/8.