7/6

Interval information

Ratio	7/6
Factorization	2-1 × 3-1 × 7
Monzo	[-1 -1 0 1⟩
Size in cents	266.8709¢
Name	septimal minor third
FJS name	[math]\displaystyle{ \text{m3}^{7} }[/math]
Special properties	superparticular, reduced
Tenney norm (log2 nd)	5.39232
Weil norm (log2 max(n, d))	5.61471
Wilson norm (sopfr(nd))	12
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In 7-limit Just Intonation, 7:6 is the septimal minor third. At about 267 cents, it is smaller than both the 5-limit minor third (6/5, ~316 cents) and the familiar 12edo minor third (300 cents).

http://en.wikipedia.org/wiki/Septimal_minor_third