# 4172edo

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Prime factorization
2
Step size
0.287632¢
Fifth
2440\4172 (701.822¢) (→610\1043)
Semitones (A1:m2)
392:316 (112.8¢ : 90.89¢)
Dual sharp fifth
2441\4172 (702.109¢)
Dual flat fifth
2440\4172 (701.822¢) (→610\1043)
Dual major 2nd
709\4172 (203.931¢)
Consistency limit
7
Distinct consistency limit
7

← 4171edo | 4172edo | 4173edo → |

^{2}× 7 × 149**4172 equal divisions of the octave** (**4172edo**), or **4172-tone equal temperament** (**4172tet**), **4172 equal temperament** (**4172et**) when viewed from a regular temperament perspective, is the tuning system that divides the octave into 4172 equal parts of about 0.288 ¢ each.

## Theory

The first 8 prime harmonics below 25% in 4172edo are 2, 5, 13, 17, 31, 37, 53, 61. Therefore, 4172edo can be thought of as a 2.5.13.17.31.37.53.61 subgroup temperament.

### Subsets and supersets

4172's divisors are 1, 2, 4, 7, 14, 28, 149, 298, 596, 1043, 2086. Notable member of the group is 149edo, which is the smallest edo uniquely consistent in the 17-odd limit, although its approximations have long been diluted by edo of this size.

### Odd harmonics

Harmonic | 3 | 5 | 7 | 9 | 11 | 13 | 15 | 17 | 19 | 21 | 23 | |
---|---|---|---|---|---|---|---|---|---|---|---|---|

Error | absolute (¢) | -0.133 | -0.024 | -0.082 | +0.021 | +0.072 | -0.067 | +0.130 | +0.030 | -0.102 | +0.072 | -0.086 |

relative (%) | -46 | -8 | -28 | +7 | +25 | -23 | +45 | +11 | -35 | +25 | -30 | |

Steps (reduced) |
6612 (2440) |
9687 (1343) |
11712 (3368) |
13225 (709) |
14433 (1917) |
15438 (2922) |
16300 (3784) |
17053 (365) |
17722 (1034) |
18325 (1637) |
18872 (2184) |