Acronym	gippixhihy
Name	great prismatohexacosihecatonicosihecatonicosachoron
Circumradius	sqrt[48-21 sqrt(5)] = 1.021064
Colonel of regiment	quippirgax
Face vector	7200, 18000, 12240, 2040
Confer	general polytopal classes: Wythoffian polychora
External links

As abstract polychoron gippixhihy is isomorphic to spixhihy, thereby replacing decagrams by decagons, resp. quit gissid by tid and gaquatid by grid.

Incidence matrix according to Dynkin symbol

     x     
 5/3 |     
     x     
  3 / \ 3/2
   x---o   
     3     

x5/3x3x3o3/2*b

.   . . .      | 7200 |    1    2    2 |    2    2    2    1    1 |   2   1    1   1
---------------+------+----------------+--------------------------+-----------------
x   . . .      |    2 | 3600    *    * |    2    2    0    0    0 |   2   1    1   0
.   x . .      |    2 |    * 7200    * |    1    0    1    1    0 |   1   1    0   1
.   . x .      |    2 |    *    * 7200 |    0    1    1    0    1 |   1   0    1   1
---------------+------+----------------+--------------------------+-----------------
x5/3x . .      |   10 |    5    5    0 | 1440    *    *    *    * |   1   1    0   0
x   . x .      |    4 |    2    0    2 |    * 3600    *    *    * |   1   0    1   0
.   x3x .      |    6 |    0    3    3 |    *    * 2400    *    * |   1   0    0   1
.   x . o3/2*b |    3 |    0    3    0 |    *    *    * 2400    * |   0   1    0   1
.   . x3o      |    3 |    0    0    3 |    *    *    *    * 2400 |   0   0    1   1
---------------+------+----------------+--------------------------+-----------------
x5/3x3x .      ♦  120 |   60   60   60 |   12   30   20    0    0 | 120   *    *   *
x5/3x . o3/2*b ♦   60 |   30   60    0 |   12    0    0   20    0 |   * 120    *   *
x   . x3o      ♦    6 |    3    0    6 |    0    3    0    0    2 |   *   * 1200   *
.   x3x3o3/2*b ♦   12 |    0   12   12 |    0    0    4    4    4 |   *   *    * 600

     x    
 5/3 |    
     x    
  3 / \ 3 
   x---o  
    3/2   

x5/3x3x3/2o3*b

.   . .   .    | 7200 |    1    2    2 |    2    2    2    1    1 |   2   1    1   1
---------------+------+----------------+--------------------------+-----------------
x   . .   .    |    2 | 3600    *    * |    2    2    0    0    0 |   2   1    1   0
.   x .   .    |    2 |    * 7200    * |    1    0    1    1    0 |   1   1    0   1
.   . x   .    |    2 |    *    * 7200 |    0    1    1    0    1 |   1   0    1   1
---------------+------+----------------+--------------------------+-----------------
x5/3x .   .    |   10 |    5    5    0 | 1440    *    *    *    * |   1   1    0   0
x   . x   .    |    4 |    2    0    2 |    * 3600    *    *    * |   1   0    1   0
.   x3x   .    |    6 |    0    3    3 |    *    * 2400    *    * |   1   0    0   1
.   x .   o3*b |    3 |    0    3    0 |    *    *    * 2400    * |   0   1    0   1
.   . x3/2o    |    3 |    0    0    3 |    *    *    *    * 2400 |   0   0    1   1
---------------+------+----------------+--------------------------+-----------------
x5/3x3x   .    ♦  120 |   60   60   60 |   12   30   20    0    0 | 120   *    *   *
x5/3x .   o3*b ♦   60 |   30   60    0 |   12    0    0   20    0 |   * 120    *   *
x   . x3/2o    ♦    6 |    3    0    6 |    0    3    0    0    2 |   *   * 1200   *
.   x3x3/2o3*b ♦   12 |    0   12   12 |    0    0    4    4    4 |   *   *    * 600