Abstract group 256.13314: $C_4.C_4^3$

• Label: 256.13314
• Order: \( 2^{8} \)
• Exponent: \( 2^{3} \)
• Nilpotent: yes
• Solvable: yes
• $\card{G^{\mathrm{ab}}}$: \( 2^{7} \)
• $\card{Z(G)}$: \( 2^{6} \)
• $\card{\Aut(G)}$: \( 2^{21} \)
• $\card{\mathrm{Out}(G)}$: \( 2^{19} \)
• Perm deg.: $18$
• Trans deg.: $256$
• Rank: $4$

Group information

Description:	$C_4.C_4^3$
Order:	\(256\)\(\medspace = 2^{8} \)
Exponent:	\(8\)\(\medspace = 2^{3} \)
Automorphism group:	$C_2^{10}.C_2^6.C_2^5$, of order \(2097152\)\(\medspace = 2^{21} \)
Composition factors:	$C_2$ x 8
Nilpotency class:	$2$
Derived length:	$2$

This group is nonabelian, a $p$-group (hence nilpotent, solvable, supersolvable, monomial, elementary, and hyperelementary), and metabelian.

Group statistics

Order	1	2	4	8
Elements	1	15	112	128	256
Conjugacy classes	1	15	80	64	160
Divisions	1	15	40	32	88
Autjugacy classes	1	4	4	1	10

Dimension	1	2	4
Irr. complex chars.	128	32	0	160
Irr. rational chars.	16	56	16	88

Minimal presentations

Permutation degree:	$18$
Transitive degree:	$256$
Rank:	$4$
Inequivalent generating quadruples:	$630$

Minimal degrees of faithful linear representations

	Over $\mathbb{C}$	Over $\mathbb{R}$	Over $\mathbb{Q}$
Irreducible	none	none	none
Arbitrary	not computed	not computed	not computed

Constructions

Presentation:	$\langle a, b, c, d \mid a^{2}=b^{4}=c^{4}=d^{8}=[a,b]=[a,c]=[a,d]=[b,c]=[b,d]=1, d^{c}=d^{5} \rangle$
Permutation group:	Degree $18$ $\langle(1,2,4,6,5,7,3,8)(15,16,17,18), (1,3,5,4)(2,6,7,8)(11,12,13,14), (1,4,5,3) \!\cdots\! \rangle$
Matrix group:	$\left\langle \left(\begin{array}{rr} 9 & 0 \\ 0 & 1 \end{array}\right), \left(\begin{array}{rr} 1 & 2 \\ 0 & 1 \end{array}\right), \left(\begin{array}{rr} 1 & 8 \\ 8 & 9 \end{array}\right), \left(\begin{array}{rr} 9 & 0 \\ 0 & 9 \end{array}\right), \left(\begin{array}{rr} 1 & 4 \\ 0 & 1 \end{array}\right), \left(\begin{array}{rr} 3 & 0 \\ 0 & 3 \end{array}\right), \left(\begin{array}{rr} 5 & 10 \\ 8 & 9 \end{array}\right), \left(\begin{array}{rr} 1 & 8 \\ 0 & 1 \end{array}\right) \right\rangle \subseteq \GL_{2}(\Z/16\Z)$
	$\left\langle \left(\begin{array}{rr} 17 & 0 \\ 0 & 17 \end{array}\right), \left(\begin{array}{rr} 17 & 21 \\ 2 & 3 \end{array}\right), \left(\begin{array}{rr} 9 & 0 \\ 0 & 9 \end{array}\right), \left(\begin{array}{rr} 1 & 20 \\ 0 & 1 \end{array}\right), \left(\begin{array}{rr} 21 & 0 \\ 0 & 21 \end{array}\right), \left(\begin{array}{rr} 3 & 0 \\ 0 & 3 \end{array}\right), \left(\begin{array}{rr} 15 & 22 \\ 36 & 35 \end{array}\right), \left(\begin{array}{rr} 9 & 16 \\ 32 & 1 \end{array}\right) \right\rangle \subseteq \GL_{2}(\Z/40\Z)$
Direct product:	$C_2$ $\, \times\, $ $C_4$ $\, \times\, $ $(C_8:C_4)$
Semidirect product:	$(C_2\times C_8)$ $\,\rtimes\,$ $C_4^2$	$C_8$ $\,\rtimes\,$ $(C_2\times C_4^2)$	$(C_2\times C_4\times C_8)$ $\,\rtimes\,$ $C_4$	$(C_4\times C_8)$ $\,\rtimes\,$ $(C_2\times C_4)$	more information
Trans. wreath product:	not isomorphic to a non-trivial transitive wreath product
Non-split product:	$C_4^3$ . $C_4$	$C_4$ . $C_4^3$	$C_4^3$ . $C_2^2$	$C_4^2$ . $C_4^2$ (2)	all 40

Elements of the group are displayed as matrices in $\GL_{2}(\Z/{16}\Z)$.

Homology

Abelianization:	$C_{2} \times C_{4}^{3} $
Schur multiplier:	$C_{2}^{4} \times C_{4}^{2}$
Commutator length:	$1$

Subgroups

There are 1023 subgroups in 895 conjugacy classes, 767 normal (11 characteristic).

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

Special subgroups

Center:	$Z \simeq$ $C_2^2\times C_4^2$	$G/Z \simeq$ $C_2^2$
Commutator:	$G' \simeq$ $C_2$	$G/G' \simeq$ $C_2\times C_4^3$
Frattini:	$\Phi \simeq$ $C_2^2\times C_4$	$G/\Phi \simeq$ $C_2^4$
Fitting:	$\operatorname{Fit} \simeq$ $C_4.C_4^3$	$G/\operatorname{Fit} \simeq$ $C_1$
Radical:	$R \simeq$ $C_4.C_4^3$	$G/R \simeq$ $C_1$
Socle:	$\operatorname{soc} \simeq$ $C_2^4$	$G/\operatorname{soc} \simeq$ $C_2^2\times C_4$
2-Sylow subgroup:	$P_{ 2 } \simeq$ $C_4.C_4^3$

Hi

Subgroup diagram and profile

Classes of subgroups up to conjugation

No diagram available: subgroups only stored up to automorphism

Classes of subgroups up to automorphism

Normal subgroups

No diagram available: subgroups only stored up to automorphism

Normal subgroups up to automorphism

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Subgroup information

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Classes of subgroups up to conjugation

Order 256: $C_4.C_4^3$

Order 128: $C_8:C_4^2$ x 8, $C_2^3.C_4^2$ x 4, $C_2^2\times C_4\times C_8$ x 2, $C_2\times C_4^3$

Order 64: $C_4.C_4^2$ x 48, $C_2\times C_4\times C_8$ x 24, $C_4^3$ x 8, $C_2^2\times C_4^2$ x 7, $C_2^3\times C_8$ x 4

Order 32: $C_2\times C_4^2$ x 68, $C_8:C_4$ x 64, $C_2^2\times C_8$ x 56, $C_4\times C_8$ x 32, $C_2^3\times C_4$ x 7

Order 16: $C_2\times C_8$ x 112, $C_2^2\times C_4$ x 82, $C_4^2$ x 80, $C_2^4$

Order 8: $C_2\times C_4$ x 148, $C_8$ x 32, $C_2^3$ x 15

Order 4: $C_4$ x 40, $C_2^2$ x 35

Order 2: $C_2$ x 15

Order 1: $C_1$

Classes of subgroups up to automorphism

Order 256: $C_4.C_4^3$

Order 128: $C_2\times C_4^3$, $C_8:C_4^2$, $C_2^3.C_4^2$, $C_2^2\times C_4\times C_8$

Order 64: $C_2^2\times C_4^2$ x 3, $C_4.C_4^2$ x 2, $C_2\times C_4\times C_8$ x 2, $C_4^3$ x 2, $C_2^3\times C_8$

Order 32: $C_2\times C_4^2$ x 8, $C_2^3\times C_4$ x 3, $C_2^2\times C_8$ x 3, $C_8:C_4$, $C_4\times C_8$

Order 16: $C_2^2\times C_4$ x 10, $C_4^2$ x 5, $C_2\times C_8$ x 3, $C_2^4$

Order 8: $C_2\times C_4$ x 11, $C_2^3$ x 4, $C_8$

Order 4: $C_2^2$ x 6, $C_4$ x 4

Order 2: $C_2$ x 4

Order 1: $C_1$

Normal subgroups (quotient in parentheses)

Order 256: $C_4.C_4^3$ ($C_1$)

Order 128: $C_8:C_4^2$ ($C_2$) x 8, $C_2^3.C_4^2$ ($C_2$) x 4, $C_2^2\times C_4\times C_8$ ($C_2$) x 2, $C_2\times C_4^3$ ($C_2$)

Order 64: $C_4.C_4^2$ ($C_4$) x 32, $C_4.C_4^2$ ($C_2^2$) x 16, $C_2\times C_4\times C_8$ ($C_4$) x 16, $C_2\times C_4\times C_8$ ($C_2^2$) x 8, $C_4^3$ ($C_2^2$) x 4, $C_4^3$ ($C_4$) x 4, $C_2^3\times C_8$ ($C_2^2$) x 4, $C_2^2\times C_4^2$ ($C_4$) x 4, $C_2^2\times C_4^2$ ($C_2^2$) x 3

Order 32: $C_8:C_4$ ($C_2\times C_4$) x 64, $C_2^2\times C_8$ ($C_2\times C_4$) x 48, $C_2\times C_4^2$ ($C_2\times C_4$) x 46, $C_4\times C_8$ ($C_2\times C_4$) x 32, $C_2^2\times C_8$ ($C_2^3$) x 8, $C_2^3\times C_4$ ($C_2\times C_4$) x 6, $C_2\times C_4^2$ ($C_2^3$) x 6, $C_2^3\times C_4$ ($C_2^3$)

Order 16: $C_2\times C_8$ ($C_4^2$) x 64, $C_2\times C_8$ ($C_2^2\times C_4$) x 48, $C_2^2\times C_4$ ($C_2^2\times C_4$) x 25, $C_4^2$ ($C_4^2$) x 24, $C_4^2$ ($C_2^2\times C_4$) x 24, $C_2^2\times C_4$ ($C_4^2$) x 24, $C_2^2\times C_4$ ($\OD_{16}$) x 16, $C_2^4$ ($C_2^2\times C_4$), $C_2^2\times C_4$ ($C_2^4$)

Order 8: $C_2\times C_4$ ($C_2\times C_4^2$) x 46, $C_2\times C_4$ ($C_8:C_4$) x 32, $C_8$ ($C_2\times C_4^2$) x 32, $C_2\times C_4$ ($C_2\times \OD_{16}$) x 16, $C_2^3$ ($C_2\times \OD_{16}$) x 8, $C_2^3$ ($C_2\times C_4^2$) x 6, $C_2\times C_4$ ($C_2^3\times C_4$) x 6, $C_2^3$ ($C_2^3\times C_4$)

Order 4: $C_2^2$ ($C_4\times \OD_{16}$) x 16, $C_4$ ($C_4.C_4^2$) x 16, $C_2^2$ ($C_4.C_4^2$) x 8, $C_2^2$ ($C_4^3$) x 4, $C_2^2$ ($C_2^2\times \OD_{16}$) x 4, $C_4$ ($C_4^3$) x 4, $C_4$ ($C_2^2\times C_4^2$) x 4, $C_2^2$ ($C_2^2\times C_4^2$) x 3

Order 2: $C_2$ ($C_8:C_4^2$) x 8, $C_2$ ($C_2^3.C_4^2$) x 4, $C_2$ ($C_2^3.C_4^2$) x 2, $C_2$ ($C_2\times C_4^3$)

Order 1: $C_1$ ($C_4.C_4^3$)

Normal subgroups up to automorphism (quotient in parentheses)

Order 256: $C_4.C_4^3$ ($C_1$)

Order 128: $C_2\times C_4^3$ ($C_2$), $C_8:C_4^2$ ($C_2$), $C_2^3.C_4^2$ ($C_2$), $C_2^2\times C_4\times C_8$ ($C_2$)

Order 64: $C_2^2\times C_4^2$ ($C_2^2$) x 2, $C_4.C_4^2$ ($C_2^2$), $C_4.C_4^2$ ($C_4$), $C_2\times C_4\times C_8$ ($C_2^2$), $C_2\times C_4\times C_8$ ($C_4$), $C_4^3$ ($C_2^2$), $C_4^3$ ($C_4$), $C_2^3\times C_8$ ($C_2^2$), $C_2^2\times C_4^2$ ($C_4$)

Order 32: $C_2\times C_4^2$ ($C_2\times C_4$) x 5, $C_2^3\times C_4$ ($C_2\times C_4$) x 2, $C_2^2\times C_8$ ($C_2\times C_4$) x 2, $C_2\times C_4^2$ ($C_2^3$) x 2, $C_2^3\times C_4$ ($C_2^3$), $C_8:C_4$ ($C_2\times C_4$), $C_2^2\times C_8$ ($C_2^3$), $C_4\times C_8$ ($C_2\times C_4$)

Order 16: $C_2^2\times C_4$ ($C_2^2\times C_4$) x 5, $C_2\times C_8$ ($C_2^2\times C_4$) x 2, $C_4^2$ ($C_4^2$) x 2, $C_4^2$ ($C_2^2\times C_4$) x 2, $C_2^2\times C_4$ ($C_4^2$) x 2, $C_2\times C_8$ ($C_4^2$), $C_2^4$ ($C_2^2\times C_4$), $C_2^2\times C_4$ ($\OD_{16}$), $C_2^2\times C_4$ ($C_2^4$)

Order 8: $C_2\times C_4$ ($C_2\times C_4^2$) x 5, $C_2^3$ ($C_2\times C_4^2$) x 2, $C_2\times C_4$ ($C_2^3\times C_4$) x 2, $C_2^3$ ($C_2^3\times C_4$), $C_2^3$ ($C_2\times \OD_{16}$), $C_2\times C_4$ ($C_8:C_4$), $C_2\times C_4$ ($C_2\times \OD_{16}$), $C_8$ ($C_2\times C_4^2$)

Order 4: $C_2^2$ ($C_2^2\times C_4^2$) x 2, $C_2^2$ ($C_4\times \OD_{16}$), $C_2^2$ ($C_4.C_4^2$), $C_2^2$ ($C_4^3$), $C_2^2$ ($C_2^2\times \OD_{16}$), $C_4$ ($C_4.C_4^2$), $C_4$ ($C_4^3$), $C_4$ ($C_2^2\times C_4^2$)

Order 2: $C_2$ ($C_2\times C_4^3$), $C_2$ ($C_8:C_4^2$), $C_2$ ($C_2^3.C_4^2$), $C_2$ ($C_2^3.C_4^2$)

Order 1: $C_1$ ($C_4.C_4^3$)

Series

Derived series

$C_4.C_4^3$

$\rhd$

$C_2$

$\rhd$

$C_1$

Chief series

$C_4.C_4^3$

$\rhd$

$C_8:C_4^2$

$\rhd$

$C_4.C_4^2$

$\rhd$

$C_2^2\times C_8$

$\rhd$

$C_2^2\times C_4$

$\rhd$

$C_2\times C_4$

$\rhd$

$C_4$

$\rhd$

$C_2$

$\rhd$

$C_1$

Lower central series

$C_4.C_4^3$

$\rhd$

$C_2$

$\rhd$

$C_1$

Upper central series

$C_1$

$\lhd$

$C_2^2\times C_4^2$

$\lhd$

$C_4.C_4^3$

Supergroups

This group is a maximal subgroup of 22 larger groups in the database.

This group is a maximal quotient of 6 larger groups in the database.

Character theory

Complex character table

See the $160 \times 160$ 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 $88 \times 88$ rational character table.