100/91 is a 13-limit interval of about 163.3 cents. As such, it can generate porcupine temperament.

Interval information
Ratio 100/91
Factorization 22 × 52 × 7-1 × 13-1
Monzo [2 0 2 -1 0 -1
Size in cents 163.2739¢
Name(s) missing ? 
FJS name [math]\displaystyle{ \text{AA1}^{5,5}_{7,13} }[/math]
Special properties reduced
Tenney norm (log2 nd) 13.1517
Weil norm (log2 max(n, d)) 13.2877
Wilson norm (sopfr(nd)) 34
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