Acronym	sipthi
Name	small prismatotriakishecatonicosachoron
Circumradius	sqrt[8-2 sqrt(5)] = 1.878261
General of army	1/(3f+2)-f3x3f5o
Colonel of regiment	(is itself locally convex – uniform polychoral members: by cells: dip gaddid qrid quitdid tigid trip paqrigafix 720 0 120 0 120 1200 sipthi 0 120 0 120 120 1200 & others)
Face vector	7200, 18000, 10320, 1560
Confer	general polytopal classes: Wythoffian polychora
External links

As abstract polytope sipthi is isomorphic to gipthi, thereby interchanging the roles of decagons and decagrams and replacing the pentagrams by pentagons, respectively replacing tigid by quit sissid and gaddid by saddid.

Incidence matrix according to Dynkin symbol

x5x5/2o3x5/3*b

. .   . .      | 7200 |    1    2    2 |    2    2    1    2    1 |   1   2    1   1
---------------+------+----------------+--------------------------+-----------------
x .   . .      |    2 | 3600    *    * |    2    2    0    0    0 |   1   2    1   0
. x   . .      |    2 |    * 7200    * |    1    0    1    1    0 |   1   1    0   1
. .   . x      |    2 |    *    * 7200 |    0    1    0    1    1 |   0   1    1   1
---------------+------+----------------+--------------------------+-----------------
x5x   . .      |   10 |    5    5    0 | 1440    *    *    *    * |   1   1    0   0
x .   . x      |    4 |    2    0    2 |    * 3600    *    *    * |   0   1    1   0
. x5/2o .      |    5 |    0    5    0 |    *    * 1440    *    * |   1   0    0   1
. x   . x5/3*b |   10 |    0    5    5 |    *    *    * 1440    * |   0   1    0   1
. .   o3x      |    3 |    0    0    3 |    *    *    *    * 2400 |   0   0    1   1
---------------+------+----------------+--------------------------+-----------------
x5x5/2o .      ♦   60 |   30   60    0 |   12    0   12    0    0 | 120   *    *   *
x5x   . x5/3*b ♦  120 |   60   60   60 |   12   30    0   12    0 |   * 120    *   *
x .   o3x      ♦    6 |    3    0    6 |    0    3    0    0    2 |   *   * 1200   *
. x5/2o3x5/3*b ♦   60 |    0   60   60 |    0    0   12   12   20 |   *   *    * 120

x5x5/3o3/2x5/3*b

. .   .   .      | 7200 |    1    2    2 |    2    2    1    2    1 |   1   2    1   1
-----------------+------+----------------+--------------------------+-----------------
x .   .   .      |    2 | 3600    *    * |    2    2    0    0    0 |   1   2    1   0
. x   .   .      |    2 |    * 7200    * |    1    0    1    1    0 |   1   1    0   1
. .   .   x      |    2 |    *    * 7200 |    0    1    0    1    1 |   0   1    1   1
-----------------+------+----------------+--------------------------+-----------------
x5x   .   .      |   10 |    5    5    0 | 1440    *    *    *    * |   1   1    0   0
x .   .   x      |    4 |    2    0    2 |    * 3600    *    *    * |   0   1    1   0
. x5/3o   .      |    5 |    0    5    0 |    *    * 1440    *    * |   1   0    0   1
. x   .   x5/3*b |   10 |    0    5    5 |    *    *    * 1440    * |   0   1    0   1
. .   o3/2x      |    3 |    0    0    3 |    *    *    *    * 2400 |   0   0    1   1
-----------------+------+----------------+--------------------------+-----------------
x5x5/3o   .      ♦   60 |   30   60    0 |   12    0   12    0    0 | 120   *    *   *
x5x   .   x5/3*b ♦  120 |   60   60   60 |   12   30    0   12    0 |   * 120    *   *
x .   o3/2x      ♦    6 |    3    0    6 |    0    3    0    0    2 |   *   * 1200   *
. x5/3o3/2x5/3*b ♦   60 |    0   60   60 |    0    0   12   12   20 |   *   *    * 120