78/77

Interval information

Ratio	78/77
Factorization	2 × 3 × 7-1 × 11-1 × 13
Monzo	[1 1 0 -1 -1 1⟩
Size in cents	22.33881¢
Names	negustma, tridecimal minor third comma
Color name	3o1ur1, tholuru unison, Tholuru comma
FJS name	[math]\displaystyle{ \text{P1}^{13}_{7,11} }[/math]
Special properties	superparticular, reduced
Tenney height (log2 nd)	12.5522
Weil height (log2 max(n, d))	12.5708
Wilson height (sopfr(nd))	36
Harmonic entropy (Shannon, [math]\displaystyle{ \sqrt{nd} }[/math])	~4.02739 bits
Comma size	small
S-expression	S12 × S13
Open this interval in xen-calc

78/77, the negustma or tridecimal minor third comma, is a 13-limit no-fives comma of about 22.3¢. It is the difference between 13/11 and 7/6 as well as the difference between 13/7 and 11/6.

See also

• Small comma
• List of superparticular intervals