91/90

The superparticular interval 91/90, the biome comma or superleap comma, is a small comma of about 19 cents.

Interval information

Ratio	91/90
Factorization	2-1 × 3-2 × 5-1 × 7 × 13
Monzo	[-1 -2 -1 1 0 1⟩
Size in cents	19.12985¢
Names	biome comma, superleap comma
FJS name	[math]\displaystyle{ \text{d2}^{7,13}_{5} }[/math]
Special properties	superparticular, reduced
Tenney norm (log2 nd)	12.9996
Weil norm (log2 max(n, d))	13.0156
Wilson norm (sopfr(nd))	33
Comma size	small
S-expression	S13⋅S14
Open this interval in xen-calc

For temperaments eliminating this comma, see also The Biosphere.