243/200, the acute minor third, is 81/80, a syntonic comma sharp of 6/5.

Interval information
Ratio 243/200
Factorization 2-3 × 35 × 5-2
Monzo [-3 5 -2
Size in cents 337.1476¢
Name acute minor third
Color name gg3, gugu 3rd
FJS name [math]\displaystyle{ \text{m3}_{5,5} }[/math]
Special properties reduced
Tenney norm (log2 nd) 15.5687
Weil norm (log2 max(n, d)) 15.8496
Wilson norm (sopfr(nd)) 31
Open this interval in xen-calc

See also