64/39

Interval information

Ratio	64/39
Factorization	26 × 3-1 × 13-1
Monzo	[6 -1 0 0 0 -1⟩
Size in cents	857.5173¢
Name	octave-reduced 39th subharmonic
FJS name	[math]\displaystyle{ \text{M6}_{13} }[/math]
Special properties	reduced, reduced subharmonic
Tenney height (log2 nd)	11.2854
Weil height (log2 max(n, d))	12
Wilson height (sopfr(nd))	28
[[File:Ji-{{#regex:64/39|/(\S+)\/(\S+)/|\1-\2}}-csound-foscil-220hz.mp3|270px]] [[:File:Ji-{{#regex:64/39|/(\S+)\/(\S+)/|\1-\2}}-csound-foscil-220hz.mp3|[sound info]]]
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64/39 is the utonal combination of primes 13 and 3 octave-reduced.

See also

• 39/32 -- its octave complement
• Gallery of just intervals