1-3-7-9-11-13 eikosany

A 13-odd-limit eikosany. This creates a scale of 1 33/32 117/112 13/12 9/8 33/28 39/32 143/112 9/7 11/8 39/28 143/96 3/2 11/7 13/8 143/84 99/56 11/6 13/7 429/224 2/1, with steps of 33/32 78/77 28/27 27/26 22/21 91/88 22/21 144/143 77/72 78/77 77/72 144/143 22/21 91/88 22/21 27/26 28/27 78/77 33/32 448/429. With 5 close comma steps that blur into one-another, this is not particularly optimal for its size melodically, but as it still has 12 perfect fifths and plenty of other simple harmonic resources, it is still quite possible to play recognisable music in it as long as you know how to use the septimal and gentle thirds correctly.

Circle diagram.

! 1-3-7-9-11-13_Eikosany.scl
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1 3 7 9 11 13 3-combination Eikosany
20
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53.272
75.611
138.572
203.910
284.447
342.482
423.019
435.084
551.317
573.656
689.890
701.955
782.492
840.527
921.064
986.402
1049.362
1071.701
1124.974
1200