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You may also see list of all polyomino sets for which data is available here.
Area: 11.
Size: 3x5.
Is rectangular: no.
Is convex: yes.
Holes: 0.
Order: ≤ 270.
Odd order: ≤ 423.
Prime rectangles: ≥ 1.
Smallest known rectangle (54x55):
Smallest known odd rectangle (47x99):
Blue number - strongly prime rectangle (which cannot be divided into two or more number of rectangles tileable by this set).
Green number - weakly prime rectangle (which cannot be divided into two rectangles tileable by this set, but which can be divided into three or more rectangles).
Purple number - prime rectangle (unknown if weakly or strongly prime).
Red number - composite rectangle (which can be divided into two rectangles tileable by this set).
Gray number - it is unknown whether rectangle is prime or composite.
Question mark (?) - solution count is unknown.
Click on underlined numbers to view picture with one solution.
