Hypovishnuzma

The hypovishnuzma (ratio: 254803968/244140625, monzo: [20 5 -12⟩) is a medium 5-limit comma, which is the difference between:

• six classic chromatic semitones (25/24) and a perfect fourth (4/3), (4/3)/(25/24)⁶
• two lesser dieses (128/125) and the kleisma (15625/15552), and
• five 3/2 perfect fifths and twelve 5/4 major thirds, octave-reduced.

Interval information

Ratio	254803968/244140625
Factorization	220 × 35 × 5-12
Monzo	[20 5 -12⟩
Size in cents	74.01044¢
Name	hypovishnuzma
Color name	saquadtrigu 4th, sg124
FJS name	[math]\displaystyle{ \text{6d4}_{5,5,5,5,5,5,5,5,5,5,5,5} }[/math]
Special properties	reduced
Tenney norm (log2 nd)	55.7879
Weil norm (log2 max(n, d))	55.8496
Wilson norm (sopfr(nd))	115
Comma size	medium
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This comma is larger than 25/24 itself, but if one more 25/24 is removed from the hypovishnuzma, we get the regular vishnuzma.

Notable edos that temper the hypovishnuzma include 15, 28, 43, 58, 73, and 101. These are the only edos that temper out this comma whose patent vals are unenfactored. Although 129edo inherits its patent val from 43edo (thus enfactored), 129 is the last integer patent val to temper out the hypovishnuzma, and curiously, also the last integer patent val to temper out 81/80, the syntonic comma.