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Primitive Perfect Isosceles Right Triangled Square

Title: _d 19:78AG GHM

Order: 19

Horizontal side: 78 Vertical side: 78

Elements: 1, 2√2, 4, 4√2, 6, 6√2, 7√2, 8√2, 12, 16, 17, 14√2, 16√2, 23, 31, 39, 31√2, 47, 39√2.

Code: 475 0 31 394 39 39 393 78 39 84 47 31 70 55 39 231 78 39 13 48 31 67 48 32 60 54 32 44 58 28 43 62 28 162 78 16 317 0 31 310 31 31 171 48 31 24 60 26 146 48 14 127 48 26 163 78 0

The properties below may precede order:side in a tiling's title:

Credit for Discovery

Just three people are credited with the discovery of Primitive Perfects:

Geoffrey H. Morley (GHM, England)

Jasper D. Skinner, II (JDS, United States)

William T. Tutte (WTT, Canada, 1917-2002) (15:44AI, 17:136AJ and 19:56AJ only)

47
39√2
39
8√2
7√2
23
1
6
6√2
4√2
4
16√2
31
31√2
17
2√2
14√2
12
16