293edo
293EDO is the equal division of the octave into 293 parts of 4.0956 cents each.
293EDO is the 62nd prime EDO.
Theory
Script error: No such module "primes_in_edo". 293 edo does not approximate prime harmonics well all the way into the 41st. The first harmonic that it approximates within 1 standard deviation of one step is 43rd, which is 10 cents flat compared to the just intonated interval.
When it comes to the intervals that are not octave-reduced prime harmonics, some which are well-approximated are 6/5, 11/7, 17/11, 19/17, 24/23, 25/17, and 25/19. 21/16, which is a composite octave-reduced harmonic, is also well represented. These numbers are related to poor approximation of prime harmonics by cancelling out of the errors. For example, 19th and 17th harmoincs have +36 and +37 error respectively, which cancels out to about 1 rc.
One step of 293edo is at the edge of human pitch perception of 3.5 cents. When combined with low harmonicity, this opens 293edo to a wide range of interpretations.
Tempered commas
293edo tempers out 1224440064/1220703125 (parakleisma) and 1121008359375/1099511627776 in the 5-limit. Using the patent val, it tempers out 225/224, 2500000/2470629, and 344373768/341796875 in the 7-limit; 6250/6237, 8019/8000, 14700/14641, and 16896/16807 in the 11-limit; 351/350, 625/624, 1625/1617, and 13122/13013 in the 13-limit; 715/714, 850/847, 1089/1088, 1377/1375, 2058/2057, and 2880/2873 in the 17-limit. Using the 293b val, it tempers out 16875/16807, 20000/19683, and 65625/65536 in the 7-limit; 896/891, 6875/6804, 9375/9317, and 12005/11979 in the 11-limit; 352/351, 364/363, 1716/1715, and 8125/8019 in the 13-limit. Using the 293bcf val, it tempers out 2401/2400, 179200/177147, and 1959552/1953125 in the 7-limit; 896/891, 2200/2187, 26411/26244, and 43923/43750 in the 11-limit; 847/845, 1001/1000, 1716/1715, 2197/2187, and 6656/6615 in the 13-limit. Using the 293d val, it tempers out 1029/1024, 19683/19600, and 48828125/48771072 in the 7-limit; 540/539, 2835/2816, 4375/4356, and 1835008/1830125 in the 11-limit; 364/363, 625/624, 2205/2197, and 4459/4455 in the 13-limit; 273/272, 833/832, 1089/1088, 1377/1375, 2295/2288, and 2500/2499 in the 17-limit. Using the 293deg val, it tempers out 385/384, 441/440, 24057/24010, and 234375/234256 in the 11-limit; 625/624, 847/845, 1001/1000, and 1575/1573 in the 13-limit; 561/560, 1225/1224, 1275/1274, and 2025/2023 in the 17-limit.
Scales
33L 19s MOS maximally even scale of 293edo has a real life application - it is a leap year pattern of a proposed calendar.