391/390
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Ratio
391/390
Factorization
2-1 × 3-1 × 5-1 × 13-1 × 17 × 23
Monzo
[-1 -1 -1 0 0 -1 1 0 1⟩
Size in cents
4.43338¢
Name
minor naiadvicema
Color name
23o17o3ug2,
twethosothugu 2nd,
Twethosothugu comma
FJS name
[math]\text{P1}^{17,23}_{5,13}[/math]
Special properties
superparticular,
reduced
Tenney height (log2 nd)
17.2184
Weil height (log2 max(n, d))
17.222
Wilson height (sopfr(nd))
63
Harmonic entropy
(Shannon, [math]\sqrt{nd}[/math])
~1.3806 bits
Comma size
small
open this interval in xen-calc
| Interval information |
twethosothugu 2nd,
Twethosothugu comma
reduced
(Shannon, [math]\sqrt{nd}[/math])
391/390, the minor naiadvicema is a 23-limit superparticular comma measuring about 4.43 cents. It forms the difference between 17/13 (septendecimal sub-fourth) and 30/23 (vicesimotertial semisixth).
Etymology
The name minor naiadvicema is contrast to the major naiadvicema, 300/299, measuring about 5.78¢, which is the difference between 13/10 and 30/23. 391/390 is smaller than 300/299 by a 23-limit unnoticeable comma, 9000/8993. The word naiadvicema was introduced by Xenllium in 2023. It is a contraction of naiadic vicesimotertial comma into a single word.