Devicisma

Interval information

Ratio	633556/633555
Factorization	22 × 3-3 × 5-1 × 7 × 113 × 13-1 × 17 × 19-2
Monzo	[2 -3 -1 1 3 -1 1 -2⟩
Size in cents	0.002732569¢
Name	devicisma
Color name	19uu17o3u1o3zgM, Nunusothutrilo-azoguma
FJS name	[math]\displaystyle{ \text{d1}^{7,11,11,11,17}_{5,13,19,19} }[/math]
Special properties	superparticular, reduced
Tenney norm (log2 nd)	38.5462
Weil norm (log2 max(n, d))	38.5462
Wilson norm (sopfr(nd))	126
Comma size	unnoticeable
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633556/633555, the devicisma is a 19-limit superparticular comma of measuring 0.00273 cents. It is the only superparticular interval to require full 19-limit JI, and as of 2026, is the smallest known S-PIFE comma.

Etymology

The name devicisma was named by Xenllium in 2023. It is a clipping of undevicesimal schisma.

See also

• Unnoticeable comma
• List of superparticular intervals
• PIFE comma