1361edo
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Prime factorization
1361 (prime)
Step size
0.881705¢
Fifth
796\1361 (701.837¢)
Semitones (A1:m2)
128:103 (112.9¢ : 90.82¢)
Consistency limit
17
Distinct consistency limit
17
| ← 1360edo | 1361edo | 1362edo → |
1361 equal divisions of the octave (abbreviated 1361edo or 1361ed2), also called 1361-tone equal temperament (1361tet) or 1361 equal temperament (1361et) when viewed under a regular temperament perspective, is the tuning system that divides the octave into 1361 equal parts of about 0.882 ¢ each. Each step represents a frequency ratio of 21/1361, or the 1361st root of 2.
Theory
1361edo is consistent in the 17-odd-limit. As an equal temperament, it tempers out 3025/3024, 1716/1715, 2500/2499, 4225/4224, 57375/57344 and 3536379/3536000. Using the 2.3.5.13.17.43 subgroup, it tempers out 2925/2924. It supports galaxy and geb.
Prime harmonics
| Harmonic | 2 | 3 | 5 | 7 | 11 | 13 | 17 | 19 | 23 | 29 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Error | Absolute (¢) | +0.000 | -0.118 | -0.127 | +0.167 | -0.253 | -0.263 | -0.033 | -0.379 | +0.381 | +0.254 | +0.299 |
| Relative (%) | +0.0 | -13.4 | -14.4 | +19.0 | -28.6 | -29.8 | -3.7 | -42.9 | +43.2 | +28.8 | +33.9 | |
| Steps (reduced) |
1361 (0) |
2157 (796) |
3160 (438) |
3821 (1099) |
4708 (625) |
5036 (953) |
5563 (119) |
5781 (337) |
6157 (713) |
6612 (1168) |
6743 (1299) | |
Subsets and supersets
1361edo is the 218th prime edo.
Regular temperament properties
| Subgroup | Comma list | Mapping | Optimal 8ve stretch (¢) |
Tuning error | |
|---|---|---|---|---|---|
| Absolute (¢) | Relative (%) | ||||
| 2.3 | [-2157 1361⟩ | [⟨1361 2157]] | 0.0373 | 0.0373 | 4.23 |
| 2.3.5 | [-31 43 -16⟩, [-67 -9 35⟩ | [⟨1361 2157 3160]] | 0.0431 | 0.0315 | 3.57 |
| 2.3.5.7 | 703125/702464, 14348907/14336000, [37 2 -4 -11⟩ | [⟨1361 2157 3160 3821]] | 0.0174 | 0.0522 | 5.92 |
| 2.3.5.7.11 | 3025/3024, 759375/758912, 14348907/14336000, 262766592/262609375 | [⟨1361 2157 3160 3821 4708]] | 0.0285 | 0.0517 | 5.86 |
| 2.3.5.7.11.13 | 1716/1715, 3025/3024, 4225/4224, 91125/91091, 131107977/131072000 | [⟨1361 2157 3160 3821 4708 5036]] | 0.0356 | 0.0498 | 5.65 |
| 2.3.5.7.11.13.17 | 1716/1715, 2500/2499, 3025/3024, 4225/4224, 57375/57344, 3536379/3536000 | [⟨1361 2157 3160 3821 4708 5036 5563]] | 0.0317 | 0.0471 | 5.34 |