C₂×D₂₀₂₅ #72211297

order	8100
automorphism	Aut(G) order 4374000
homology	Abelianization (H₁) = C₂² · Schur multiplier (H₂) = C₂

Aliases

dihedral	D₄₀₅₀
direct product	C₂×D₂₀₂₅

Splittings

Fitting	C₂×C₂₅×C₈₁ ⋊ C₂
derived, Hall	C₂₅×C₈₁ ⋊ C₂²
Sylow	C₈₁ ⋊ C₂×D₂₅
Sylow	C₂₅ ⋊ C₂×D₈₁

Subgroups

	subgroup	G/H
center, hypercenter	C₂	D₂₀₂₅
commutator, cosocle, hypocenter	C₂₅×C₈₁	C₂²
Frattini	C₅×C₂₇	C₂×D₁₅
Fitting	C₂×C₂₅×C₈₁	C₂
socle	C₂×C₃×C₅	D₁₃₅
LCS	G ▷ C₂₅×C₈₁
UCS	C₁ ◁ C₂

75 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degree	μ(G) = 108
transitive degree	μ_t(G) = 4050

A minimal faithful permutation representation — 2 generators on 108 points:

(1,2)(3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83)(84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108);(4,83)(5,82)(6,81)(7,80)(8,79)(9,78)(10,77)(11,76)(12,75)(13,74)(14,73)(15,72)(16,71)(17,70)(18,69)(19,68)(20,67)(21,66)(22,65)(23,64)(24,63)(25,62)(26,61)(27,60)(28,59)(29,58)(30,57)(31,56)(32,55)(33,54)(34,53)(35,52)(36,51)(37,50)(38,49)(39,48)(40,47)(41,46)(42,45)(43,44)(85,108)(86,107)(87,106)(88,105)(89,104)(90,103)(91,102)(92,101)(93,100)(94,99)(95,98)(96,97)

Conjugacy classes & character table

2028 conjugacy classes. The character table is too large to display.

Relationships

maximal subgroup of	D₈₁₀₀, C₂×D₆₀₇₅, C₂×D₁₀₁₂₅, …
maximal normal subgroup of	D₈₁₀₀
maximal quotient of	D₈₁₀₀, Dic₄₀₅₀, C₂×D₆₀₇₅, …

GAP

Past the SmallGroups library coverage — no SmallGroups id. Construct it from a minimal faithful permutation representation:

gap> G := Group((1,2)(3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83)(84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108), (4,83)(5,82)(6,81)(7,80)(8,79)(9,78)(10,77)(11,76)(12,75)(13,74)(14,73)(15,72)(16,71)(17,70)(18,69)(19,68)(20,67)(21,66)(22,65)(23,64)(24,63)(25,62)(26,61)(27,60)(28,59)(29,58)(30,57)(31,56)(32,55)(33,54)(34,53)(35,52)(36,51)(37,50)(38,49)(39,48)(40,47)(41,46)(42,45)(43,44)(85,108)(86,107)(87,106)(88,105)(89,104)(90,103)(91,102)(92,101)(93,100)(94,99)(95,98)(96,97));

C2×D2025 #72211297