Acronym	irnpac
Name	icositetraretrointercepted prismatotetracontaoctachoron
Cross sections	©
Circumradius	sqrt[2-sqrt(2)] = 0.765367
Colonel of regiment	giddic
Face vector	144, 576, 744, 168
External links

As abstract polytope irnpac is isomorphic to inpac, thereby replacing querco by sirco.

Incidence matrix

 144 |   4   4 |   4   4   8  2 |  1  1  4  4
-----+---------+----------------+------------
   2 | 288   * |   2   0   2  0 |  1  0  1  2
   2 |   * 288 |   0   2   2  1 |  0  1  2  2
-----+---------+----------------+------------
   3 |   3   0 | 192   *   *  * |  1  0  0  1
   3 |   0   3 |   * 192   *  * |  0  1  1  0
   4 |   2   2 |   *   * 288  * |  0  0  1  1
   4 |   0   4 |   *   *   * 72 |  0  0  0  2
-----+---------+----------------+------------
♦  6 |  12   0 |   8   0   0  0 | 24  *  *  *
♦  6 |   0  12 |   0   8   0  0 |  * 24  *  *
♦  6 |   3   6 |   0   2   3  0 |  *  * 96  *
♦ 24 |  24  24 |   8   0  12  6 |  *  *  * 24