21/19
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| Ratio | 21/19 |
| Factorization | 3 × 7 × 19-1 |
| Monzo | [0 1 0 1 0 0 0 -1⟩ |
| Size in cents | 173.26789¢ |
| Name | large neutral undevicesimal second |
| FJS name | [math]\text{M2}^{7}_{19}[/math] |
| Special properties | reduced |
| Tenney height (log2 n⋅d) | 8.64024 |
| Weil height (max(n, d)) | 21 |
| Benedetti height (n⋅d) | 399 |
| Harmonic entropy (Shannon, [math]\sqrt{n\cdot d}[/math]) |
~4.57186 bits |
[sound info] | |
| open this interval in xen-calc | |
21/19 is the large neutral undevicesimal second. Its octave complement is the minor neutral undevicesimal seventh 38/21.