Pythrabian comma
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| Ratio | 94489280512/94143178827 |
| Factorization | 233 × 3-23 × 11 |
| Monzo | [33 -23 0 0 1⟩ |
| Size in cents | 6.3529225¢ |
| Name | Pythrabian comma |
| Color name | trisalo comma |
| FJS name | [math]\text{ddd3}^{11}[/math] |
| Special properties | reduced |
| Tenney height (log2 nd) | 72.9136 |
| Weil height (log2 max(n, d)) | 72.9189 |
| Wilson height (sopfr(nd)) | 146 |
| Harmonic entropy (Shannon, [math]\sqrt{nd}[/math]) |
~1.56712 bits |
| Comma size | small |
| open this interval in xen-calc | |
The Pythrabian comma is the 11-limit small comma 94489280512/94143178827, which measures roughly 6.35 cents. It is the interval which, when tempered out, equates 11/8 with a stack of twenty-three 3/2 perfect fifths octave-reduced, and also equates a stack of two Pythagorean commas with 33/32. The name "Pythrabian comma" comes from 11/8 and 3/2 both being the generators for Alpharabian tuning, with 3/2 additionally being the generator for Pythagorean tuning- however the name is even more appropriate in light of the aforementioned connection with both the Pythagorean comma and 33/32.
It is tempered out in 41edo and 53edo, where 11/8 is mapped to the triply-augmented second (AAA2, e.g. C–D♯𝄪).