10:12:15:18
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| Harmonics | 10:12:15:18 |
| Subharmonics | 1/(18:15:12:10) |
| Intervals from root | 1/1 – 6/5 – 3/2 – 9/5 |
| Cents from root | 0¢ 316¢ 702¢ 1018¢ |
| Step intervals | 6/5, 5/4, 6/5 |
| Step cents | 316¢, 386¢, 316¢ |
| Prime limit | 5 |
| Genus | 32 ⋅ 5 (45) |
| Intervallic odd limit | 9 |
| Otonal odd limit | 15 |
| Utonal odd limit | 15 |
10:12:15:18 is a minor seventh chord found on the iii (5⁄4) and vi (5⁄3) of Ptolemy's intense diatonic scale (Zarlino), perhaps the most common 5-limit diatonic.