266/255
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| Ratio | 266/255 |
| Factorization | 2 × 3-1 × 5-1 × 7 × 17-1 × 19 |
| Monzo | [1 -1 -1 1 0 0 -1 1⟩ |
| Size in cents | 73.114798¢ |
| Name | Mercurial Chromatic Semitone |
| Color name | 19o17uzg2, nosuzogu 2nd |
| FJS name | [math]\text{m2}^{7,19}_{5,17}[/math] |
| Special properties | reduced |
| Tenney height (log2 nd) | 16.0496 |
| Weil height (log2 max(n, d)) | 16.1106 |
| Wilson height (sopfr(nd)) | 53 |
| Harmonic entropy (Shannon, [math]\sqrt{nd}[/math]) |
~4.3441 bits |
| open this interval in xen-calc | |
266/255 or the mercurial chromatic semitone, is the difference between a 19/17 whole tone and a 15/14 diatonic semitone. It appears when mercury meantone is extended beyond a heptatonic scale.