286/285
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| Ratio | 286/285 |
| Factorization | 2 × 3-1 × 5-1 × 11 × 13 × 19-1 |
| Monzo | [1 -1 -1 0 1 1 0 -1⟩ |
| Size in cents | 6.0638733¢ |
| Name | chthonisma |
| Color name | 19u3o1og1, nuthologu 1sn, Nuthologu comma |
| FJS name | [math]\text{d1}^{11,13}_{5,19}[/math] |
| Special properties | superparticular, reduced |
| Tenney height (log2 nd) | 16.3147 |
| Weil height (log2 max(n, d)) | 16.3197 |
| Wilson height (sopfr (nd)) | 53 |
| Harmonic entropy (Shannon, [math]\sqrt{n\cdot d}[/math]) |
~2.55417 bits |
| Comma size | small |
| open this interval in xen-calc | |
286/285, the chthonisma is a 19-limit superparticular comma of about 6.1 ¢. It is the difference between 19/13 and 22/15, and also between 15/13 and 22/19.
Etymology
The name chthonisma was named by Xenllium in 2023. It was so named because 15/13 and 22/19 are chthonic interseptimal intervals.