Kuragesma

43940/43923, the Kuragesma, is a no-sevens, 13-limit unnoticeable comma measuring about 0.66993 cents. It is the difference between 5/3, which is the pure major 6th, and three intervals of 14641/8788.

Interval information

Ratio	43940/43923
Factorization	22 × 3-1 × 5 × 11-4 × 133
Monzo	[2 -1 1 0 -4 3⟩
Size in cents	0.6699288¢
Name	Kuragesma
Color name	3o31u4y2 ,Tritho-aquadlu-ayo 2nd
FJS name	[math]\displaystyle{ \text{m2}^{5,13,13,13}_{11,11,11,11} }[/math]
Special properties	reduced
Tenney height (log2 nd)	30.8459
Weil height (log2 max(n, d))	30.8465
Wilson height (sopfr(nd))	95
Harmonic entropy (Shannon, [math]\displaystyle{ \sqrt{nd} }[/math])	~1.20402 bits
Comma size	unnoticeable
Open this interval in xen-calc

Therefore 17576/14641, combination of four stack of 8/11 and thrree stack of 13/8 , approximates 6/5 , a pure minor 3rd.

Etymology

The name was proposed by Misohito Nakai in 2025, Named after his girlfriend (蒼瀬くらげ) who was interested in Xenharmonic.