31/27

Interval information

Ratio	31/27
Subgroup monzo	3.31 [-3 1⟩
Size in cents	239.1706¢
Names	tricesimoprimal ultramajor second, tricesimoprimal inframinor third
FJS name	[math]\displaystyle{ \text{M2}^{31} }[/math]
Special properties	reduced
Tenney norm (log2 nd)	9.70908
Weil norm (log2 max(n, d))	9.90839
Wilson norm (sopfr(nd))	40
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In 31-limit just intonation, 31/27 is either the tricesimoprimal ultramajor second or tricesimoprimal inframinor third. It is sharp of the Pythagorean major second (9/8) by 248/243, and flat of the minor third (32/27) by 32/31.

See also

• 54/31 – its octave complement