Abstract group 288.181: $\OD_{16}:C_{18}$

• Label: 288.181
• Order: \( 2^{5} \cdot 3^{2} \)
• Exponent: \( 2^{3} \cdot 3^{2} \)
• Nilpotent: yes
• Solvable: yes
• $\card{G^{\mathrm{ab}}}$: \( 2^{4} \cdot 3^{2} \)
• $\card{Z(G)}$: \( 2^{3} \cdot 3^{2} \)
• $\card{\Aut(G)}$: \( 2^{6} \cdot 3^{2} \)
• $\card{\mathrm{Out}(G)}$: \( 2^{4} \cdot 3^{2} \)
• Perm deg.: $25$
• Trans deg.: $144$
• Rank: $3$

Group information

Description:	$\OD_{16}:C_{18}$
Order:	\(288\)\(\medspace = 2^{5} \cdot 3^{2} \)
Exponent:	\(72\)\(\medspace = 2^{3} \cdot 3^{2} \)
Automorphism group:	$C_2^2\times C_6\times S_4$, of order \(576\)\(\medspace = 2^{6} \cdot 3^{2} \)
Composition factors:	$C_2$ x 5, $C_3$ x 2
Nilpotency class:	$2$
Derived length:	$2$

This group is nonabelian, elementary for $p = 2$ (hence nilpotent, solvable, supersolvable, monomial, and hyperelementary), and metabelian.

Group statistics

Order	1	2	3	4	6	8	9	12	18	24	36	72
Elements	1	7	2	8	14	16	6	16	42	32	48	96	288
Conjugacy classes	1	4	2	5	8	10	6	10	24	20	30	60	180
Divisions	1	4	1	4	4	4	1	4	4	4	4	4	39
Autjugacy classes	1	2	1	2	2	2	1	2	2	2	2	2	21

Dimension	1	2	4	6	8	12	16	48
Irr. complex chars.	144	36	0	0	0	0	0	0	180
Irr. rational chars.	8	12	4	8	1	4	1	1	39

Minimal presentations

Permutation degree:	$25$
Transitive degree:	$144$
Rank:	$3$
Inequivalent generating triples:	$13104$

Minimal degrees of faithful linear representations

	Over $\mathbb{C}$	Over $\mathbb{R}$	Over $\mathbb{Q}$
Irreducible	2	4	48
Arbitrary	2	4	14

Constructions

Presentation:	$\langle a, b, c \mid a^{2}=b^{2}=c^{72}=[a,c]=[b,c]=1, b^{a}=bc^{36} \rangle$
Permutation group:	Degree $25$ $\langle(1,12,4,10,2,11,3,9)(5,16,8,14,6,15,7,13), (1,7)(2,8)(3,6)(4,5)(9,15)(10,16) \!\cdots\! \rangle$
Matrix group:	$\left\langle \left(\begin{array}{rr} 0 & 1 \\ 1 & 0 \end{array}\right), \left(\begin{array}{rr} 27 & 0 \\ 0 & 46 \end{array}\right), \left(\begin{array}{rr} 5 & 0 \\ 0 & 5 \end{array}\right) \right\rangle \subseteq \GL_{2}(\F_{73})$
Direct product:	$C_9$ $\, \times\, $ $(\OD_{16}:C_2)$
Semidirect product:	$\OD_{16}$ $\,\rtimes\,$ $C_{18}$ (3)	$(C_2\times C_{72})$ $\,\rtimes\,$ $C_2$ (3)	$(C_2\times C_8)$ $\,\rtimes\,$ $C_{18}$ (3)	$(C_9\times \OD_{16})$ $\,\rtimes\,$ $C_2$ (3)	more information
Trans. wreath product:	not isomorphic to a non-trivial transitive wreath product
Non-split product:	$Q_8$ . $C_{36}$	$D_4$ . $C_{36}$ (3)	$C_{72}$ . $C_2^2$ (4)	$C_{36}$ . $C_2^3$	all 31

Elements of the group are displayed as matrices in $\GL_{2}(\F_{73})$.

Homology

Abelianization:	$C_{2}^{2} \times C_{36} \simeq C_{2}^{2} \times C_{4} \times C_{9}$
Schur multiplier:	$C_{2}^{2}$
Commutator length:	$1$

Subgroups

There are 102 subgroups in 93 conjugacy classes, 84 normal (21 characteristic).

Characteristic subgroups are shown in this color. Normal (but not characteristic) subgroups are shown in this color.

Special subgroups

Center:	$Z \simeq$ $C_{72}$	$G/Z \simeq$ $C_2^2$
Commutator:	$G' \simeq$ $C_2$	$G/G' \simeq$ $C_2^2\times C_{36}$
Frattini:	$\Phi \simeq$ $C_{12}$	$G/\Phi \simeq$ $C_2^2\times C_6$
Fitting:	$\operatorname{Fit} \simeq$ $\OD_{16}:C_{18}$	$G/\operatorname{Fit} \simeq$ $C_1$
Radical:	$R \simeq$ $\OD_{16}:C_{18}$	$G/R \simeq$ $C_1$
Socle:	$\operatorname{soc} \simeq$ $C_6$	$G/\operatorname{soc} \simeq$ $C_2^2\times C_{12}$
2-Sylow subgroup:	$P_{ 2 } \simeq$ $\OD_{16}:C_2$
3-Sylow subgroup:	$P_{ 3 } \simeq$ $C_9$

Hi

Subgroup diagram and profile

Classes of subgroups up to conjugation

Classes of subgroups up to automorphism

Normal subgroups

Normal subgroups up to automorphism

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Subgroup information

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Classes of subgroups up to conjugation

Order 288: $\OD_{16}:C_{18}$

Order 144: $C_9\times \OD_{16}$ x 3, $C_2\times C_{72}$ x 3, $D_4:C_{18}$

Order 96: $\OD_{16}:C_6$

Order 72: $C_{72}$ x 4, $C_2\times C_{36}$ x 3, $D_4\times C_9$ x 3, $Q_8\times C_9$

Order 48: $C_3\times \OD_{16}$ x 3, $C_2\times C_{24}$ x 3, $D_4:C_6$

Order 36: $C_{36}$ x 4, $C_2\times C_{18}$ x 3

Order 32: $\OD_{16}:C_2$

Order 24: $C_{24}$ x 4, $C_2\times C_{12}$ x 3, $C_3\times D_4$ x 3, $C_3\times Q_8$

Order 18: $C_{18}$ x 4

Order 16: $\OD_{16}$ x 3, $C_2\times C_8$ x 3, $D_4:C_2$

Order 12: $C_{12}$ x 4, $C_2\times C_6$ x 3

Order 9: $C_9$

Order 8: $C_8$ x 4, $D_4$ x 3, $C_2\times C_4$ x 3, $Q_8$

Order 6: $C_6$ x 4

Order 4: $C_4$ x 4, $C_2^2$ x 3

Order 3: $C_3$

Order 2: $C_2$ x 4

Order 1: $C_1$

Classes of subgroups up to automorphism

Order 288: $\OD_{16}:C_{18}$

Order 144: $D_4:C_{18}$, $C_9\times \OD_{16}$, $C_2\times C_{72}$

Order 96: $\OD_{16}:C_6$

Order 72: $C_{72}$ x 2, $C_2\times C_{36}$, $Q_8\times C_9$, $D_4\times C_9$

Order 48: $D_4:C_6$, $C_3\times \OD_{16}$, $C_2\times C_{24}$

Order 36: $C_{36}$ x 2, $C_2\times C_{18}$

Order 32: $\OD_{16}:C_2$

Order 24: $C_{24}$ x 2, $C_2\times C_{12}$, $C_3\times Q_8$, $C_3\times D_4$

Order 18: $C_{18}$ x 2

Order 16: $\OD_{16}$, $C_2\times C_8$, $D_4:C_2$

Order 12: $C_{12}$ x 2, $C_2\times C_6$

Order 9: $C_9$

Order 8: $C_8$ x 2, $Q_8$, $D_4$, $C_2\times C_4$

Order 6: $C_6$ x 2

Order 4: $C_4$ x 2, $C_2^2$

Order 3: $C_3$

Order 2: $C_2$ x 2

Order 1: $C_1$

Normal subgroups (quotient in parentheses)

Order 288: $\OD_{16}:C_{18}$ ($C_1$)

Order 144: $C_9\times \OD_{16}$ ($C_2$) x 3, $C_2\times C_{72}$ ($C_2$) x 3, $D_4:C_{18}$ ($C_2$)

Order 96: $\OD_{16}:C_6$ ($C_3$)

Order 72: $C_{72}$ ($C_2^2$) x 4, $C_2\times C_{36}$ ($C_2^2$) x 3, $D_4\times C_9$ ($C_4$) x 3, $Q_8\times C_9$ ($C_4$)

Order 48: $C_3\times \OD_{16}$ ($C_6$) x 3, $C_2\times C_{24}$ ($C_6$) x 3, $D_4:C_6$ ($C_6$)

Order 36: $C_2\times C_{18}$ ($C_2\times C_4$) x 3, $C_{36}$ ($C_2\times C_4$) x 3, $C_{36}$ ($C_2^3$)

Order 32: $\OD_{16}:C_2$ ($C_9$)

Order 24: $C_{24}$ ($C_2\times C_6$) x 4, $C_2\times C_{12}$ ($C_2\times C_6$) x 3, $C_3\times D_4$ ($C_{12}$) x 3, $C_3\times Q_8$ ($C_{12}$)

Order 18: $C_{18}$ ($C_2^2\times C_4$)

Order 16: $\OD_{16}$ ($C_{18}$) x 3, $C_2\times C_8$ ($C_{18}$) x 3, $D_4:C_2$ ($C_{18}$)

Order 12: $C_2\times C_6$ ($C_2\times C_{12}$) x 3, $C_{12}$ ($C_2\times C_{12}$) x 3, $C_{12}$ ($C_2^2\times C_6$)

Order 9: $C_9$ ($\OD_{16}:C_2$)

Order 8: $C_8$ ($C_2\times C_{18}$) x 4, $D_4$ ($C_{36}$) x 3, $C_2\times C_4$ ($C_2\times C_{18}$) x 3, $Q_8$ ($C_{36}$)

Order 6: $C_6$ ($C_2^2\times C_{12}$)

Order 4: $C_2^2$ ($C_2\times C_{36}$) x 3, $C_4$ ($C_2\times C_{36}$) x 3, $C_4$ ($C_2^2\times C_{18}$)

Order 3: $C_3$ ($\OD_{16}:C_6$)

Order 2: $C_2$ ($C_2^2\times C_{36}$)

Order 1: $C_1$ ($\OD_{16}:C_{18}$)

Normal subgroups up to automorphism (quotient in parentheses)

Order 288: $\OD_{16}:C_{18}$ ($C_1$)

Order 144: $D_4:C_{18}$ ($C_2$), $C_9\times \OD_{16}$ ($C_2$), $C_2\times C_{72}$ ($C_2$)

Order 96: $\OD_{16}:C_6$ ($C_3$)

Order 72: $C_{72}$ ($C_2^2$) x 2, $C_2\times C_{36}$ ($C_2^2$), $Q_8\times C_9$ ($C_4$), $D_4\times C_9$ ($C_4$)

Order 48: $D_4:C_6$ ($C_6$), $C_3\times \OD_{16}$ ($C_6$), $C_2\times C_{24}$ ($C_6$)

Order 36: $C_2\times C_{18}$ ($C_2\times C_4$), $C_{36}$ ($C_2^3$), $C_{36}$ ($C_2\times C_4$)

Order 32: $\OD_{16}:C_2$ ($C_9$)

Order 24: $C_{24}$ ($C_2\times C_6$) x 2, $C_2\times C_{12}$ ($C_2\times C_6$), $C_3\times Q_8$ ($C_{12}$), $C_3\times D_4$ ($C_{12}$)

Order 18: $C_{18}$ ($C_2^2\times C_4$)

Order 16: $\OD_{16}$ ($C_{18}$), $C_2\times C_8$ ($C_{18}$), $D_4:C_2$ ($C_{18}$)

Order 12: $C_2\times C_6$ ($C_2\times C_{12}$), $C_{12}$ ($C_2\times C_{12}$), $C_{12}$ ($C_2^2\times C_6$)

Order 9: $C_9$ ($\OD_{16}:C_2$)

Order 8: $C_8$ ($C_2\times C_{18}$) x 2, $Q_8$ ($C_{36}$), $D_4$ ($C_{36}$), $C_2\times C_4$ ($C_2\times C_{18}$)

Order 6: $C_6$ ($C_2^2\times C_{12}$)

Order 4: $C_2^2$ ($C_2\times C_{36}$), $C_4$ ($C_2\times C_{36}$), $C_4$ ($C_2^2\times C_{18}$)

Order 3: $C_3$ ($\OD_{16}:C_6$)

Order 2: $C_2$ ($C_2^2\times C_{36}$)

Order 1: $C_1$ ($\OD_{16}:C_{18}$)

Series

Derived series

$\OD_{16}:C_{18}$

$\rhd$

$C_2$

$\rhd$

$C_1$

Chief series

$\OD_{16}:C_{18}$

$\rhd$

$C_2\times C_{72}$

$\rhd$

$C_2\times C_{36}$

$\rhd$

$C_{36}$

$\rhd$

$C_{18}$

$\rhd$

$C_6$

$\rhd$

$C_2$

$\rhd$

$C_1$

Lower central series

$\OD_{16}:C_{18}$

$\rhd$

$C_2$

$\rhd$

$C_1$

Upper central series

$C_1$

$\lhd$

$C_{72}$

$\lhd$

$\OD_{16}:C_{18}$

Supergroups

This group is a maximal subgroup of 39 larger groups in the database.

This group is a maximal quotient of 21 larger groups in the database.

Character theory

Complex character table

See the $180 \times 180$ character table (warning: may be slow to load). Alternatively, you may search for characters of this group with desired properties.

Rational character table

See the $39 \times 39$ rational character table.