128/91
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Ratio
128/91
Factorization
27 × 7-1 × 13-1
Monzo
[7 0 0 -1 0 -1⟩
Size in cents
590.6464¢
Names
smaller huntmic tritone,
octave-reduced 91st subharmonic
Color name
thuru 4th
FJS name
[math]\text{A4}_{7,13}[/math]
Special properties
reduced,
reduced subharmonic
Tenney height (log2 nd)
13.5078
Weil height (log2 max(n, d))
14
Wilson height (sopfr(nd))
34
Harmonic entropy
(Shannon, [math]\sqrt{nd}[/math])
~4.16604 bits
open this interval in xen-calc
| Interval information |
octave-reduced 91st subharmonic
reduced subharmonic
(Shannon, [math]\sqrt{nd}[/math])
128/91 is the 91st subharmonic or smaller huntmic tritone, measuring about 590.6¢. It is 640/637 (huntma, about 8.13¢) sharp of 7/5, or 4096/4095 (schismina, about 0.42¢) sharp of 45/32. Its inversion is the larger huntmic tritone, or octave-reduced 91th harmonic 91/64, and the interval that separates them is the small comma 8281/8192, about 18.7¢.