← #277556
Subgroups — #277556
Order 512.
611 conjugacy classes of subgroups.
The subgroup lattice has 357 nodes — too large to display as a diagram.
Conjugacy classes of subgroups
| # | subgroup | G/H | class size | multiplicity | normal? | properties |
|---|
| 1 | #28711 | C2 | 1 | 1 | yes | maximal, characteristic |
| 2 | #24679 | C2 | 1 | 2 | yes | maximal |
| 3 | #22739 | C2 | 1 | 1 | yes | maximal, characteristic, complemented |
| 4 | C2×#1676 | C2 | 1 | 1 | yes | maximal, characteristic, complemented |
| 5 | C2×#1588 | C2 | 1 | 1 | yes | maximal, characteristic |
| 6 | #10593 | C2 | 1 | 2 | yes | maximal, complemented |
| 7 | #10413 | C2 | 1 | 2 | yes | maximal |
| 8 | #9831 | C2 | 1 | 1 | yes | maximal, characteristic, complemented |
| 9 | #9600 | C2 | 1 | 1 | yes | maximal, characteristic, complemented |
| 10 | #8974 | C2 | 1 | 2 | yes | maximal, complemented |
| 11 | #8654 | C2 | 1 | 1 | yes | maximal, characteristic |
| 12 | C2×#500 | C22 | 1 | 1 | yes | characteristic |
| 13 | C2×#477 | C22 | 1 | 2 | yes | — |
| 14 | C2×C8×Q8 | C22 | 1 | 1 | yes | characteristic |
| 15 | C2×C4×SD16 | C22 | 1 | 1 | yes | characteristic |
| 16 | C2×#436 | C22 | 1 | 1 | yes | characteristic |
| 17 | #2563 | C22 | 1 | 2 | yes | — |
| 18 | #2355 | C22 | 1 | 2 | yes | — |
| 19 | #2075 | — | 2 | 1 | no | — |
| 20 | #2075 | — | 2 | 1 | no | — |
| 21 | #2074 | — | 2 | 2 | no | — |
| 22 | #2055 | — | 2 | 2 | no | — |
| 23 | #1990 | C22 | 1 | 2 | yes | — |
| 24 | #1987 | C22 | 1 | 2 | yes | — |
| 25 | #1956 | C22 | 1 | 2 | yes | — |
| 26 | #1949 | — | 2 | 2 | no | — |
| 27 | #1949 | — | 2 | 2 | no | — |
| 28 | #1947 | C22 | 1 | 2 | yes | — |
| 29 | #1939 | C22 | 1 | 2 | yes | — |
| 30 | #1925 | — | 2 | 2 | no | — |
| 31 | #1835 | — | 2 | 1 | no | — |
| 32 | #1834 | C22 | 1 | 1 | yes | characteristic |
| 33 | #1809 | — | 2 | 2 | no | — |
| 34 | #1802 | C22 | 1 | 2 | yes | — |
| 35 | C4×#107 | — | 2 | 1 | no | — |
| 36 | C4×#106 | C22 | 1 | 1 | yes | characteristic |
| 37 | #1676 | — | 2 | 4 | no | — |
| 38 | #1588 | — | 2 | 4 | no | — |
| 39 | C2×#335 | C22 | 1 | 1 | yes | characteristic |
| 40 | C2×#335 | C22 | 1 | 1 | yes | characteristic |
| 41 | C2×#333 | C22 | 1 | 2 | yes | — |
| 42 | C2×Q8⋊C8 | C22 | 1 | 1 | yes | characteristic |
| 43 | C2×D4⋊C8 | C22 | 1 | 1 | yes | characteristic |
| 44 | C2×#322 | C22 | 1 | 1 | yes | characteristic |
| 45 | #1296 | C22 | 1 | 2 | yes | — |
| 46 | #1279 | C22 | 1 | 2 | yes | — |
| 47 | C22×SD16 | D4 | 1 | 1 | yes | characteristic |
| 48 | C22×M16 | — | 2 | 1 | no | — |
| 49 | C2×C4⋊Q8 | C23 | 1 | 2 | yes | — |
| 50 | C2×C4×Q8 | C23 | 1 | 1 | yes | characteristic |
| 51 | C2×C4×D4 | C23 | 1 | 1 | yes | characteristic |
| 52 | #500 | — | 2 | 2 | no | — |
| 53 | #500 | — | 2 | 2 | no | — |
| 54 | #477 | — | 2 | 4 | no | — |
| 55 | #477 | — | 2 | 4 | no | — |
| 56 | C8×Q8 | — | 2 | 2 | no | — |
| 57 | C8×Q8 | D4 | 1 | 4 | yes | — |
| 58 | C4×SD16 | — | 2 | 2 | no | — |
| 59 | C4×SD16 | — | 2 | 2 | no | — |
| 60 | #436 | — | 2 | 2 | no | — |
| 61 | #436 | — | 2 | 2 | no | — |
| 62 | C2×#107 | — | 2 | 1 | no | — |
| 63 | C2×#107 | — | 2 | 1 | no | — |
| 64 | C2×#107 | — | 2 | 2 | no | — |
| 65 | C2×#107 | — | 2 | 2 | no | — |
| 66 | C2×#106 | D4 | 1 | 1 | yes | characteristic |
| 67 | C2×#106 | D4 | 1 | 2 | yes | — |
| 68 | C2×C4⋊C8 | — | 2 | 1 | no | — |
| 69 | C2×C4⋊C8 | — | 2 | 2 | no | — |
| 70 | C2×C4⋊C8 | C23 | 1 | 2 | yes | — |
| 71 | C2×C4⋊C8 | C23 | 1 | 1 | yes | characteristic |
| 72 | C2×C4⋊C8 | C23 | 1 | 1 | yes | characteristic |
| 73 | C2×#103 | — | 2 | 2 | no | — |
| 74 | C2×#103 | — | 4 | 2 | no | — |
| 75 | C2×#103 | D4 | 1 | 1 | yes | characteristic |
| 76 | C2×#102 | — | 2 | 2 | no | — |
| 77 | C2×#102 | D4 | 1 | 1 | yes | characteristic |
| 78 | C2×C22⋊C8 | — | 2 | 1 | no | — |
| 79 | C2×C4×C8 | — | 2 | 1 | no | — |
| 80 | C2×C4×C8 | C23 | 1 | 1 | yes | characteristic |
| 81 | C2×C4×C8 | C23 | 1 | 1 | yes | characteristic |
| 82 | C2×C4×C8 | C23 | 1 | 1 | yes | characteristic |
| 83 | #393 | — | 4 | 2 | no | — |
| 84 | #391 | — | 2 | 2 | no | — |
| 85 | #390 | — | 2 | 2 | no | — |
| 86 | #387 | — | 4 | 2 | no | — |
| 87 | #384 | C23 | 1 | 2 | yes | — |
| 88 | #382 | — | 2 | 2 | no | — |
| 89 | #382 | — | 2 | 2 | no | — |
| 90 | #380 | — | 2 | 2 | no | — |
| 91 | #380 | — | 2 | 2 | no | — |
| 92 | C4×C4⋊C4 | — | 2 | 2 | no | — |
| 93 | C4×C4⋊C4 | — | 2 | 2 | no | — |
| 94 | C4×C4⋊C4 | C23 | 1 | 2 | yes | — |
| 95 | #340 | — | 2 | 2 | no | — |
| 96 | #340 | — | 2 | 2 | no | — |
| 97 | #340 | — | 2 | 1 | no | — |
| 98 | #340 | — | 2 | 1 | no | — |
| 99 | #340 | — | 2 | 2 | no | — |
| 100 | #340 | — | 2 | 2 | no | — |
| 101 | #340 | — | 2 | 2 | no | — |
| 102 | #340 | — | 2 | 2 | no | — |
| 103 | #340 | D4 | 1 | 1 | yes | characteristic |
| 104 | #340 | D4 | 1 | 1 | yes | characteristic |
| 105 | #336 | — | 2 | 2 | no | — |
| 106 | #335 | — | 2 | 2 | no | — |
| 107 | #335 | — | 2 | 2 | no | — |
| 108 | #333 | — | 2 | 4 | no | — |
| 109 | Q8⋊C8 | — | 2 | 2 | no | — |
| 110 | D4⋊C8 | — | 2 | 2 | no | — |
| 111 | #322 | — | 2 | 2 | no | — |
| 112 | C22×Q8 | — | 2 | 2 | no | — |
| 113 | C22×Q8 | C2×D4 | 1 | 1 | yes | characteristic |
| 114 | C22×D4 | C2×D4 | 1 | 1 | yes | characteristic |
| 115 | C23×C4 | — | 2 | 1 | no | — |
| 116 | C2×SD16 | — | 2 | 2 | no | — |
| 117 | C2×SD16 | — | 4 | 2 | no | — |
| 118 | C2×M16 | — | 4 | 4 | no | — |
| 119 | C2×M16 | — | 4 | 2 | no | — |
| 120 | C22×C8 | — | 2 | 1 | no | — |
| 121 | C22×C8 | — | 2 | 1 | no | — |
| 122 | C22×C8 | — | 2 | 1 | no | — |
| 123 | C22×C8 | — | 2 | 2 | no | — |
| 124 | C22×C8 | C2×D4 | 1 | 1 | yes | characteristic |
| 125 | C22×C8 | C2×D4 | 1 | 1 | yes | characteristic |
| 126 | C22×C8 | C2×D4 | 1 | 1 | yes | characteristic |
| 127 | C22×C8 | C2×D4 | 1 | 1 | yes | characteristic |
| 128 | C4⋊Q8 | — | 2 | 2 | no | — |
| 129 | C4⋊Q8 | — | 2 | 2 | no | — |
| 130 | C4⋊Q8 | — | 2 | 2 | no | — |
| 131 | C4⋊Q8 | — | 2 | 2 | no | — |
| 132 | C4×Q8 | — | 2 | 1 | no | — |
| 133 | C4×Q8 | — | 2 | 1 | no | — |
| 134 | C4×Q8 | C2×D4 | 1 | 2 | yes | — |
| 135 | C4×Q8 | #41 | 1 | 2 | yes | — |
| 136 | C4×D4 | — | 2 | 1 | no | — |
| 137 | C4×D4 | — | 2 | 1 | no | — |
| 138 | C4×D4 | — | 2 | 1 | no | — |
| 139 | C4×D4 | — | 2 | 1 | no | — |
| 140 | C2×C4⋊C4 | — | 2 | 1 | no | — |
| 141 | C2×C4⋊C4 | — | 2 | 2 | no | — |
| 142 | C2×C4⋊C4 | — | 2 | 2 | no | — |
| 143 | C2×C4⋊C4 | — | 2 | 2 | no | — |
| 144 | C2×C4⋊C4 | — | 2 | 2 | no | — |
| 145 | C2×C4⋊C4 | — | 2 | 2 | no | — |
| 146 | C2×C4⋊C4 | C2×D4 | 1 | 1 | yes | characteristic |
| 147 | C2×C4⋊C4 | C2×D4 | 1 | 2 | yes | — |
| 148 | C2×C4⋊C4 | C2×D4 | 1 | 2 | yes | — |
| 149 | C2×C4⋊C4 | C2×D4 | 1 | 1 | yes | characteristic |
| 150 | C2×C22⋊C4 | — | 2 | 1 | no | — |
| 151 | C2×C22⋊C4 | — | 4 | 2 | no | — |
| 152 | C2×C22⋊C4 | — | 4 | 2 | no | — |
| 153 | C2×C42 | — | 2 | 1 | no | — |
| 154 | C2×C42 | — | 2 | 2 | no | — |
| 155 | C2×C42 | — | 4 | 2 | no | — |
| 156 | C2×C42 | C24 | 1 | 1 | yes | characteristic |
| 157 | #107 | — | 4 | 4 | no | — |
| 158 | #107 | — | 4 | 2 | no | — |
| 159 | #107 | — | 4 | 2 | no | — |
| 160 | #107 | — | 4 | 4 | no | — |
| 161 | #106 | — | 2 | 2 | no | — |
| 162 | #106 | — | 4 | 2 | no | — |
| 163 | C4⋊C8 | — | 2 | 4 | no | — |
| 164 | C4⋊C8 | — | 2 | 1 | no | — |
| 165 | C4⋊C8 | — | 2 | 2 | no | — |
| 166 | C4⋊C8 | — | 2 | 1 | no | — |
| 167 | C4⋊C8 | — | 2 | 1 | no | — |
| 168 | C4⋊C8 | — | 2 | 2 | no | — |
| 169 | C4⋊C8 | — | 4 | 4 | no | — |
| 170 | C4⋊C8 | C2×D4 | 1 | 2 | yes | — |
| 171 | #103 | — | 2 | 2 | no | — |
| 172 | #103 | — | 4 | 4 | no | — |
| 173 | #103 | — | 8 | 4 | no | — |
| 174 | #102 | — | 2 | 2 | no | — |
| 175 | #102 | — | 4 | 4 | no | — |
| 176 | C22⋊C8 | — | 4 | 2 | no | — |
| 177 | C4×C8 | — | 2 | 4 | no | — |
| 178 | C4×C8 | — | 2 | 1 | no | — |
| 179 | C4×C8 | — | 2 | 1 | no | — |
| 180 | C4×C8 | — | 2 | 1 | no | — |
| 181 | C4×C8 | — | 2 | 1 | no | — |
| 182 | C4×C8 | C2×D4 | 1 | 2 | yes | — |
| 183 | C4×C8 | #41 | 1 | 2 | yes | — |
| 184 | #95 | — | 2 | 2 | no | — |
| 185 | #95 | — | 4 | 2 | no | — |
| 186 | #95 | — | 4 | 2 | no | — |
| 187 | #95 | — | 4 | 2 | no | — |
| 188 | #95 | — | 4 | 2 | no | — |
| 189 | #95 | — | 4 | 2 | no | — |
| 190 | C24 | — | 2 | 1 | no | — |
| 191 | C2×Q8 | — | 2 | 1 | no | — |
| 192 | C2×Q8 | — | 2 | 2 | no | — |
| 193 | C2×Q8 | — | 2 | 2 | no | — |
| 194 | C2×Q8 | — | 4 | 2 | no | — |
| 195 | C2×Q8 | — | 4 | 2 | no | — |
| 196 | C2×Q8 | — | 8 | 2 | no | — |
| 197 | C2×Q8 | — | 8 | 2 | no | — |
| 198 | C2×Q8 | #121 | 1 | 2 | yes | — |
| 199 | C2×D4 | — | 2 | 1 | no | — |
| 200 | C2×D4 | — | 2 | 1 | no | — |
| 201 | C2×D4 | — | 2 | 2 | no | — |
| 202 | C2×D4 | — | 2 | 2 | no | — |
| 203 | C22×C4 | — | 2 | 1 | no | — |
| 204 | C22×C4 | — | 2 | 1 | no | — |
| 205 | C22×C4 | — | 2 | 2 | no | — |
| 206 | C22×C4 | — | 2 | 2 | no | — |
| 207 | C22×C4 | — | 2 | 1 | no | — |
| 208 | C22×C4 | — | 4 | 1 | no | — |
| 209 | C22×C4 | — | 4 | 1 | no | — |
| 210 | C22×C4 | — | 4 | 2 | no | — |
| 211 | C22×C4 | — | 4 | 2 | no | — |
| 212 | C22×C4 | — | 4 | 2 | no | — |
| 213 | C22×C4 | — | 4 | 2 | no | — |
| 214 | C22×C4 | C22×D4 | 1 | 1 | yes | characteristic |
| 215 | C22×C4 | C22×D4 | 1 | 1 | yes | characteristic |
| 216 | C22×C4 | H(5,𝔽2) | 1 | 1 | yes | characteristic |
| 217 | SD16 | — | 4 | 4 | no | — |
| 218 | M16 | — | 8 | 4 | no | — |
| 219 | C2×C8 | — | 2 | 2 | no | — |
| 220 | C2×C8 | — | 2 | 2 | no | — |
| 221 | C2×C8 | — | 2 | 2 | no | — |
| 222 | C2×C8 | — | 2 | 1 | no | — |
| 223 | C2×C8 | — | 2 | 2 | no | — |
| 224 | C2×C8 | — | 2 | 1 | no | — |
| 225 | C2×C8 | — | 2 | 2 | no | — |
| 226 | C2×C8 | — | 2 | 2 | no | — |
| 227 | C2×C8 | — | 4 | 1 | no | — |
| 228 | C2×C8 | — | 4 | 1 | no | — |
| 229 | C2×C8 | — | 4 | 2 | no | — |
| 230 | C2×C8 | — | 4 | 1 | no | — |
| 231 | C2×C8 | — | 4 | 2 | no | — |
| 232 | C2×C8 | — | 4 | 2 | no | — |
| 233 | C2×C8 | — | 4 | 2 | no | — |
| 234 | C2×C8 | — | 4 | 2 | no | — |
| 235 | C2×C8 | #121 | 1 | 2 | yes | — |
| 236 | C2×C8 | #121 | 1 | 2 | yes | — |
| 237 | C4⋊C4 | — | 2 | 2 | no | — |
| 238 | C4⋊C4 | — | 2 | 1 | no | — |
| 239 | C4⋊C4 | — | 2 | 2 | no | — |
| 240 | C4⋊C4 | — | 2 | 1 | no | — |
| 241 | C4⋊C4 | — | 2 | 1 | no | — |
| 242 | C4⋊C4 | — | 2 | 2 | no | — |
| 243 | C4⋊C4 | — | 2 | 2 | no | — |
| 244 | C4⋊C4 | — | 2 | 2 | no | — |
| 245 | C4⋊C4 | — | 2 | 2 | no | — |
| 246 | C4⋊C4 | — | 4 | 2 | no | — |
| 247 | C4⋊C4 | — | 4 | 2 | no | — |
| 248 | C4⋊C4 | — | 4 | 2 | no | — |
| 249 | C4⋊C4 | — | 4 | 2 | no | — |
| 250 | C4⋊C4 | — | 4 | 2 | no | — |
| 251 | C4⋊C4 | — | 4 | 2 | no | — |
| 252 | C4⋊C4 | — | 4 | 2 | no | — |
| 253 | C4⋊C4 | — | 4 | 2 | no | — |
| 254 | C4⋊C4 | — | 8 | 2 | no | — |
| 255 | C4⋊C4 | #121 | 1 | 2 | yes | — |
| 256 | C22⋊C4 | — | 4 | 1 | no | — |
| 257 | C22⋊C4 | — | 4 | 1 | no | — |
| 258 | C22⋊C4 | — | 16 | 2 | no | — |
| 259 | C22⋊C4 | — | 16 | 2 | no | — |
| 260 | C42 | — | 2 | 2 | no | — |
| 261 | C42 | — | 2 | 2 | no | — |
| 262 | C42 | — | 4 | 2 | no | — |
| 263 | C42 | — | 4 | 2 | no | — |
| 264 | C42 | — | 16 | 2 | no | — |
| 265 | C42 | C22×D4 | 1 | 1 | yes | characteristic |
| 266 | C42 | C2×#41 | 1 | 1 | yes | characteristic |
| 267 | C42 | C2×#41 | 1 | 1 | yes | characteristic |
| 268 | C42 | 2−1+4 | 1 | 1 | yes | characteristic |
| 269 | C23 | — | 4 | 1 | no | — |
| 270 | C23 | — | 4 | 2 | no | — |
| 271 | C23 | — | 4 | 2 | no | — |
| 272 | C23 | — | 4 | 1 | no | — |
| 273 | C23 | — | 4 | 1 | no | — |
| 274 | C23 | D42 | 1 | 1 | yes | characteristic |
| 275 | Q8 | — | 2 | 2 | no | — |
| 276 | Q8 | — | 2 | 2 | no | — |
| 277 | Q8 | — | 4 | 2 | no | — |
| 278 | Q8 | — | 8 | 4 | no | — |
| 279 | Q8 | — | 16 | 2 | no | — |
| 280 | D4 | — | 4 | 2 | no | — |
| 281 | D4 | — | 4 | 1 | no | — |
| 282 | D4 | — | 4 | 1 | no | — |
| 283 | C2×C4 | — | 2 | 1 | no | — |
| 284 | C2×C4 | — | 2 | 1 | no | — |
| 285 | C2×C4 | — | 2 | 2 | no | — |
| 286 | C2×C4 | — | 2 | 2 | no | — |
| 287 | C2×C4 | — | 4 | 2 | no | — |
| 288 | C2×C4 | — | 4 | 1 | no | — |
| 289 | C2×C4 | — | 4 | 1 | no | — |
| 290 | C2×C4 | — | 4 | 1 | no | — |
| 291 | C2×C4 | — | 4 | 2 | no | — |
| 292 | C2×C4 | — | 4 | 2 | no | — |
| 293 | C2×C4 | — | 4 | 2 | no | — |
| 294 | C2×C4 | — | 4 | 2 | no | — |
| 295 | C2×C4 | — | 4 | 2 | no | — |
| 296 | C2×C4 | — | 4 | 2 | no | — |
| 297 | C2×C4 | — | 4 | 2 | no | — |
| 298 | C2×C4 | — | 8 | 2 | no | — |
| 299 | C2×C4 | — | 8 | 1 | no | — |
| 300 | C2×C4 | — | 8 | 1 | no | — |
| 301 | C2×C4 | — | 8 | 2 | no | — |
| 302 | C2×C4 | — | 8 | 2 | no | — |
| 303 | C2×C4 | — | 8 | 2 | no | — |
| 304 | C2×C4 | — | 8 | 2 | no | — |
| 305 | C2×C4 | — | 8 | 2 | no | — |
| 306 | C2×C4 | — | 8 | 2 | no | — |
| 307 | C2×C4 | C2×#121 | 1 | 1 | yes | characteristic |
| 308 | C2×C4 | C2×#121 | 1 | 1 | yes | characteristic |
| 309 | C2×C4 | #537 | 1 | 1 | yes | characteristic |
| 310 | C2×C4 | #547 | 1 | 1 | yes | characteristic |
| 311 | C2×C4 | #548 | 1 | 1 | yes | characteristic |
| 312 | C2×C4 | #553 | 1 | 1 | yes | characteristic |
| 313 | C2×C4 | #575 | 1 | 2 | yes | — |
| 314 | C2×C4 | #575 | 1 | 2 | yes | — |
| 315 | C2×C4 | #578 | 1 | 2 | yes | — |
| 316 | C2×C4 | #578 | 1 | 2 | yes | — |
| 317 | C8 | — | 2 | 2 | no | — |
| 318 | C8 | — | 2 | 2 | no | — |
| 319 | C8 | — | 4 | 2 | no | — |
| 320 | C8 | — | 4 | 2 | no | — |
| 321 | C8 | — | 4 | 1 | no | — |
| 322 | C8 | — | 4 | 1 | no | — |
| 323 | C8 | — | 8 | 1 | no | — |
| 324 | C8 | — | 8 | 2 | no | — |
| 325 | C22 | — | 8 | 2 | no | — |
| 326 | C22 | — | 8 | 1 | no | — |
| 327 | C22 | — | 8 | 2 | no | — |
| 328 | C22 | — | 8 | 1 | no | — |
| 329 | C22 | — | 8 | 1 | no | — |
| 330 | C22 | #2416 | 1 | 1 | yes | characteristic |
| 331 | C22 | #3269 | 1 | 2 | yes | — |
| 332 | C22 | #3269 | 1 | 2 | yes | — |
| 333 | C22 | #3290 | 1 | 1 | yes | characteristic |
| 334 | C22 | #3292 | 1 | 1 | yes | characteristic |
| 335 | C4 | — | 2 | 1 | no | — |
| 336 | C4 | — | 2 | 1 | no | — |
| 337 | C4 | — | 4 | 2 | no | — |
| 338 | C4 | — | 4 | 2 | no | — |
| 339 | C4 | — | 8 | 2 | no | — |
| 340 | C4 | — | 8 | 1 | no | — |
| 341 | C4 | — | 8 | 2 | no | — |
| 342 | C4 | — | 16 | 2 | no | — |
| 343 | C4 | — | 16 | 2 | no | — |
| 344 | C4 | #3040 | 1 | 1 | yes | characteristic |
| 345 | C4 | #3044 | 1 | 1 | yes | characteristic |
| 346 | C4 | #3054 | 1 | 1 | yes | characteristic |
| 347 | C4 | #3059 | 1 | 1 | yes | characteristic |
| 348 | C4 | #3349 | 1 | 2 | yes | — |
| 349 | C4 | #3377 | 1 | 2 | yes | — |
| 350 | C2 | — | 16 | 1 | no | — |
| 351 | C2 | #20127 | 1 | 2 | yes | — |
| 352 | C2 | #20157 | 1 | 2 | yes | — |
| 353 | C2 | #24743 | 1 | 1 | yes | characteristic |
| 354 | C2 | #24785 | 1 | 1 | yes | characteristic |
| 355 | C2 | #24797 | 1 | 1 | yes | characteristic |
Complements
Splittings G = N ⋊ H with N normal; H ≅ G/N.
Maximal subgroups
By isomorphism type — maximal subgroups of the same type appear once, whether or not they are normal.
Finite Group Databasebeta