171/128

Interval information

Ratio	171/128
Subgroup monzo	2.3.19 [-7 2 1⟩
Size in cents	501.423¢
Name	octave-reduced 171st harmonic
FJS name	[math]\displaystyle{ \text{P4}^{19} }[/math]
Special properties	reduced, reduced harmonic
Tenney height (log2 nd)	14.4179
Weil height (log2 max(n, d))	14.8357
Wilson height (sopfr(nd))	39
Open this interval in xen-calc

171/128is the octave-reduced 43rd harmonic. It serves an important role in 8th Octave Overtone Tuning and other over-2 scales, where it is one of two perfect fourths available (the other being 43/32).