Immunity comma

The immunity comma (1638400/1594323 = [16 -13 2⟩) is a 5-limit medium comma of about 47.2 cents. Tempering out this comma leads to the immunity family of temperaments.

Interval information

Ratio	1638400/1594323
Factorization	216 × 3-13 × 52
Monzo	[16 -13 2⟩
Size in cents	47.21242¢
Name	immunity comma
Color name	ssyy2, Sasa-yoyo comma
FJS name	[math]\displaystyle{ \text{m2}^{5,5} }[/math]
Special properties	reduced
Tenney norm (log2 nd)	41.2484
Weil norm (log2 max(n, d))	41.2877
Wilson norm (sopfr(nd))	81
Comma size	medium
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Etymology

This comma was named by Mike Battaglia in 2011 such that the corresponding temperament is paired with amity.

Perhaps "Immunity," because it's a counterpart to Amity or something like that.

—Mike Battaglia