640/637
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| Ratio | 640/637 |
| Factorization | 27 × 5 × 7-2 × 13-1 |
| Monzo | [7 0 1 -2 0 -1⟩ |
| Size in cents | 8.1342392¢ |
| Name | huntma |
| Color name | 3urry-2, thururuyo negative 2nd, Thururuyo comma |
| FJS name | [math]\text{d}{-2}^{5}_{7,7,13}[/math] |
| Special properties | reduced |
| Tenney height (log2 nd) | 18.6371 |
| Weil height (log2 max(n, d)) | 18.6439 |
| Wilson height (sopfr (nd)) | 46 |
| Harmonic entropy (Shannon, [math]\sqrt{nd}[/math]) |
~1.79456 bits |
| Comma size | small |
| open this interval in xen-calc | |
640/637, the huntma, is a 13-limit small comma. It is the amount by which two 8/7s exceed 13/10. By tempering it out is defined the huntmic temperament, which enables the huntmic chords.