121/72 is a fairly simple interval within the 2.3.11 subgroup, also known as Alpharabian tuning. It is very close to an equal-tempered major 6th (about 1.3 cents off), and can thus be named the Alpharabian quasi-equal major 6th.

Interval information
Ratio 121/72
Factorization 2-3 × 3-2 × 112
Monzo [-3 -2 0 0 2
Size in cents 898.7259¢
Name(s) missing ? 
FJS name [math]\displaystyle{ \text{m6}^{11,11} }[/math]
Special properties reduced
Tenney norm (log2 nd) 13.0888
Weil norm (log2 max(n, d)) 13.8377
Wilson norm (sopfr(nd)) 34
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