243/128

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Interval information
Ratio 243/128
Factorization 2-7 × 35
Monzo [-7 5
Size in cents 1109.775¢
Name Pythagorean major seventh
Color name Lw7, lawa 7th
FJS name [math]\text{M7}[/math]
Special properties reduced,
reduced harmonic
Tenney height (log2 nd) 14.9248
Weil height (log2 max(n, d)) 15.8496
Wilson height (sopfr(nd)) 29
Harmonic entropy
(Shannon, [math]\sqrt{nd}[/math])
~4.24223 bits

[sound info]
open this interval in xen-calc

243/128 is the Pythagorean major seventh. It is equal to five 3/2s, octave-reduced.

See also