Finite Group Databasebeta

← C2×#26021893 #36707149

Subgroups — C2×#26021893 #36707149

Order 22784.

1398 conjugacy classes of subgroups.

The subgroup lattice has 678 nodes — too large to display as a diagram.

Conjugacy classes of subgroups

#subgroupG/Hclass sizemultiplicitynormal?properties
1C2×#19151582C211yesmaximal, characteristic, complemented
2C2×#19151572C211yesmaximal, characteristic, complemented
3#26021893C218yesmaximal, direct product factor
4C2×#19151388C212yesmaximal, complemented
5C2×#19151385C212yesmaximal, complemented
6C2×#525×C89C211yesmaximal, characteristic
7C22×#13083558—21no—
8C2×#15667971—21no—
9#19151582—22no—
10#19151582C2214yescomplemented
11C2×#15667931—21no—
12C2×#15667929C2212yes—
13#19151572—22no—
14#19151572C2214yescomplemented
15C2×#15667927—21no—
16C2×#15667927C2212yes—
17#19151388C2218yescomplemented
18#19151385C2218yescomplemented
19C22×#41×C89C2211yescharacteristic
20C24×C4×C89C411yescharacteristic, complemented
21#525×C89—22no—
22#525×C89—22no—
23#525×C89C414yescomplemented
24#525×C89C2214yes—
25C2×#123×C89C411yescharacteristic, complemented
26C2×#123×C89C2211yescharacteristic
27C2×C22⋊Q8×C89—21no—
28C2×#121×C89—21no—
29C2×#120×C89C411yescharacteristic, complemented
30C2×#120×C89C2211yescharacteristic
31C2×C4×D4×C89—21no—
32C2×C4×D4×C89—21no—
33C2×#117×C89C411yescharacteristic, complemented
34C2×#13083558—22no—
35C2×#13083558—24no—
36C2×#13083558—41no—
37C2×#13083558—42no—
38C22×#10623494—41no—
39#15667971—24no—
40#15667971—42no—
41C2×C4⋊Dic89—41no—
42C2×C22⋊Dic89—22no—
43C2×C4×Dic89—41no—
44#15667931—24no—
45#15667929—22no—
46#15667929C2314yes—
47#15667927—24no—
48#15667927—22no—
49#15667927C2314yes—
50C25×C89C2×C411yescharacteristic
51C2×#41×C89—42no—
52C2×#41×C89—41no—
53C2×#41×C89—41no—
54C2×#41×C89C2×C412yes—
55C2×#41×C89D412yes—
56C2×#41×C89D412yes—
57C2×#41×C89C2312yes—
58C22×Q8×C89D411yescharacteristic
59C22×D4×C89—21no—
60C22×D4×C89—21no—
61C22×D4×C89C2×C411yescharacteristic
62C22×D4×C89D411yescharacteristic
63C22×D4×C89C2311yescharacteristic
64C23×C4×C89—21no—
65C23×C4×C89—21no—
66C23×C4×C89—22no—
67C23×C4×C89—41no—
68C23×C4×C89—42no—
69C23×C4×C89—41no—
70C23×C4×C89C2×C411yescharacteristic
71C23×C4×C89C2×C411yescharacteristic
72C23×C4×C89C2×C414yescomplemented
73C23×C4×C89D411yescharacteristic
74C23×C4×C89D411yescharacteristic
75#123×C89—22no—
76#123×C89—21no—
77#123×C89—21no—
78#123×C89C2×C412yes—
79#123×C89C2×C414yescomplemented
80#123×C89C2312yes—
81C22⋊Q8×C89—24no—
82C22⋊Q8×C89—24no—
83#121×C89—24no—
84#121×C89—24no—
85#120×C89—22no—
86#120×C89—21no—
87#120×C89—21no—
88#120×C89C2×C412yes—
89#120×C89C2×C414yescomplemented
90#120×C89C2312yes—
91C4×D4×C89—24no—
92C4×D4×C89—24no—
93C4×D4×C89—24no—
94C4×D4×C89—24no—
95#117×C89—22no—
96#117×C89C2×C414yescomplemented
97C2×C4⋊C4×C89—21no—
98C2×C4⋊C4×C89—21no—
99C2×C4⋊C4×C89—21no—
100C2×C22⋊C4×C89—21no—
101C2×C22⋊C4×C89—21no—
102C2×C22⋊C4×C89—21no—
103C2×C22⋊C4×C89—21no—
104C2×C22⋊C4×C89C2×C411yescharacteristic
105C2×C22⋊C4×C89C2×C411yescharacteristic
106C2×C42×C89—21no—
107C22×Dic89—42no—
108#13083558—24no—
109#13083558—42no—
110#13083558—44no—
111C2×#10623494—42no—
112C2×#10623494—44no—
113C4⋊Dic89—44no—
114C22⋊Dic89—24no—
115C22⋊Dic89—42no—
116C4×Dic89—44no—
117C24×C89—21no—
118C24×C89—21no—
119C24×C89—41no—
120C24×C89—41no—
121C24×C89—44no—
122C24×C89C22⋊C411yescharacteristic
123C24×C89C22×C411yescharacteristic
124C24×C89C22×C412yes—
125C24×C89C2×D411yescharacteristic
126#41×C89—42no—
127#41×C89—42no—
128#41×C89—42no—
129#41×C89—42no—
130#41×C89—42no—
131#41×C89—42no—
132#41×C89—42no—
133#41×C89—42no—
134C2×Q8×C89—41no—
135C2×Q8×C89—41no—
136C2×Q8×C89C22⋊C412yes—
137C2×Q8×C89C2×D412yes—
138C2×D4×C89—22no—
139C2×D4×C89—24no—
140C2×D4×C89—22no—
141C2×D4×C89—41no—
142C2×D4×C89—41no—
143C2×D4×C89—41no—
144C2×D4×C89—41no—
145C2×D4×C89—41no—
146C2×D4×C89—41no—
147C2×D4×C89—44no—
148C2×D4×C89—44no—
149C2×D4×C89C22⋊C412yes—
150C2×D4×C89C22⋊C412yes—
151C2×D4×C89C22×C411yescharacteristic
152C2×D4×C89C22×C412yes—
153C2×D4×C89C2×D411yescharacteristic
154C2×D4×C89C2×D412yes—
155C2×D4×C89C2×D411yescharacteristic
156C2×D4×C89C2411yescharacteristic
157C22×C4×C89—22no—
158C22×C4×C89—21no—
159C22×C4×C89—21no—
160C22×C4×C89—22no—
161C22×C4×C89—22no—
162C22×C4×C89—21no—
163C22×C4×C89—21no—
164C22×C4×C89—21no—
165C22×C4×C89—21no—
166C22×C4×C89—21no—
167C22×C4×C89—21no—
168C22×C4×C89—21no—
169C22×C4×C89—21no—
170C22×C4×C89—24no—
171C22×C4×C89—24no—
172C22×C4×C89—42no—
173C22×C4×C89—42no—
174C22×C4×C89—44no—
175C22×C4×C89—44no—
176C22×C4×C89—44no—
177C22×C4×C89—44no—
178C22×C4×C89—42no—
179C22×C4×C89—41no—
180C22×C4×C89—41no—
181C22×C4×C89—41no—
182C22×C4×C89—41no—
183C22×C4×C89C22⋊C411yescharacteristic
184C22×C4×C89C22⋊C411yescharacteristic
185C22×C4×C89C22⋊C412yes—
186C22×C4×C89C22⋊C412yes—
187C22×C4×C89C22⋊C412yes—
188C22×C4×C89C22⋊C411yescharacteristic
189C22×C4×C89C22×C412yes—
190C22×C4×C89C22×C412yes—
191C22×C4×C89C2×D412yes—
192C22×C4×C89C2×D411yescharacteristic
193C22×C4×C89C2×D412yes—
194C4⋊C4×C89—24no—
195C4⋊C4×C89—22no—
196C4⋊C4×C89—24no—
197C4⋊C4×C89—22no—
198C22⋊C4×C89—22no—
199C22⋊C4×C89—24no—
200C22⋊C4×C89—21no—
201C22⋊C4×C89—21no—
202C22⋊C4×C89—22no—
203C22⋊C4×C89—22no—
204C22⋊C4×C89—24no—
205C22⋊C4×C89—22no—
206C22⋊C4×C89C22×C412yes—
207C22⋊C4×C89C22×C412yes—
208C42×C89—24no—
209C23×C89—24no—
210C23×C89—22no—
211C23×C89—21no—
212C23×C89—21no—
213C23×C89—21no—
214C23×C89—21no—
215C23×C89—21no—
216C23×C89—21no—
217C23×C89—42no—
218C23×C89—42no—
219C23×C89—44no—
220C23×C89—42no—
221C23×C89—42no—
222C23×C89—44no—
223C23×C89—42no—
224C23×C89—42no—
225C23×C89—44no—
226C23×C89—48no—
227C23×C89—44no—
228C23×C89—41no—
229C23×C89—41no—
230C23×C89C2×C22⋊C411yescharacteristic
231C23×C89C2×C22⋊C411yescharacteristic
232C23×C89C2×C22⋊C411yescharacteristic
233C23×C89C2×C22⋊C412yes—
234C23×C89C23×C411yescharacteristic
235C23×C89C22×D411yescharacteristic
236Q8×C89—42no—
237Q8×C89—42no—
238D4×C89—42no—
239D4×C89—42no—
240D4×C89—42no—
241D4×C89—41no—
242D4×C89—41no—
243D4×C89—42no—
244D4×C89—41no—
245D4×C89—41no—
246D4×C89—44no—
247D4×C89—48no—
248D4×C89—44no—
249C2×C4×C89—21no—
250C2×C4×C89—21no—
251C2×C4×C89—21no—
252C2×C4×C89—21no—
253C2×C4×C89—21no—
254C2×C4×C89—21no—
255C2×C4×C89—22no—
256C2×C4×C89—22no—
257C2×C4×C89—22no—
258C2×C4×C89—22no—
259C2×C4×C89—22no—
260C2×C4×C89—22no—
261C2×C4×C89—22no—
262C2×C4×C89—22no—
263C2×C4×C89—22no—
264C2×C4×C89—22no—
265C2×C4×C89—22no—
266C2×C4×C89—22no—
267C2×C4×C89—22no—
268C2×C4×C89—22no—
269C2×C4×C89—22no—
270C2×C4×C89—48no—
271C2×C4×C89—42no—
272C2×C4×C89—42no—
273C2×C4×C89—42no—
274C2×C4×C89—41no—
275C2×C4×C89—41no—
276C2×C4×C89—44no—
277C2×C4×C89—44no—
278C2×C4×C89—42no—
279C2×C4×C89#9912yes—
280C2×C4×C89#9911yescharacteristic
281C2×C4×C89#9911yescharacteristic
282C2×C4×C89C2×C22⋊C412yes—
283C2×C4×C89C2×C22⋊C411yescharacteristic
284C2×C4×C89C2×C22⋊C412yes—
285C2×C4×C89C2×C22⋊C412yes—
286C2×C4×C89C22×D411yescharacteristic
287C2×Dic89—44no—
288C2×Dic89—84no—
289#10623494—44no—
290C22×C89—22no—
291C22×C89—24no—
292C22×C89—21no—
293C22×C89—21no—
294C22×C89—21no—
295C22×C89—21no—
296C22×C89—22no—
297C22×C89—42no—
298C22×C89—44no—
299C22×C89—42no—
300C22×C89—42no—
301C22×C89—41no—
302C22×C89—41no—
303C22×C89—41no—
304C22×C89—41no—
305C22×C89—44no—
306C22×C89—48no—
307C22×C89—42no—
308C22×C89—42no—
309C22×C89—42no—
310C22×C89—44no—
311C22×C89—42no—
312C22×C89—44no—
313C22×C89—81no—
314C22×C89—81no—
315C22×C89C2×#9911yescharacteristic
316C22×C89C2×#9911yescharacteristic
317C22×C89C22×C22⋊C411yescharacteristic
318C4×C89—21no—
319C4×C89—22no—
320C4×C89—22no—
321C4×C89—21no—
322C4×C89—42no—
323C4×C89—42no—
324C4×C89—42no—
325C4×C89C2×#9912yes—
326C4×C89C2×#9912yes—
327Dic89—84no—
328C2×#2120—891nomaximal, Sylow
329C2×C89—21no—
330C2×C89—21no—
331C2×C89—41no—
332C2×C89—44no—
333C2×C89—41no—
334C2×C89—41no—
335C2×C89—41no—
336C2×C89—42no—
337C2×C89#212012yescomplemented
338C2×C89C22×#9911yescharacteristic
339C2×#525D8911yescharacteristic
340C2×#413—891no—
341C2×#410—891no—
342#2120—898no—
343C2×#352—892no—
344C2×AΣL(1,𝔽16)—892no—
345C89C2×#212011yescharacteristic, complemented, Sylow
346C22×#41C2×D8911yescharacteristic
347C24×C4Dic8911yescharacteristic, complemented
348C22×M16—1781no—
349#525—22no—
350#525—22no—
351#525Dic8914yescomplemented
352#525C2×D8914yes—
353C2×#123Dic8911yescharacteristic, complemented
354C2×#123C2×D8911yescharacteristic
355C2×C22⋊Q8—21no—
356C2×#121—21no—
357C2×#120Dic8911yescharacteristic, complemented
358C2×#120C2×D8911yescharacteristic
359C2×C4×D4—21no—
360C2×C4×D4—21no—
361C2×#117—1781no—
362C2×#117Dic8911yescharacteristic, complemented
363#413—894no—
364#413—1782no—
365C2×#101—1781no—
366C2×#100—892no—
367#410—894no—
368#410—1782no—
369C2×#99—892no—
370C2×#99—1781no—
371#352—898no—
372AΣL(1,𝔽16)—898no—
373C25C2×Dic8911yescharacteristic
374C2×#41—41no—
375C2×#41—42no—
376C2×#41—41no—
377C2×#41C2×Dic8912yes—
378C2×#41C22⋊D8912yes—
379C2×#41C22⋊D8912yes—
380C2×#41C22×D8912yes—
381C22×Q8C22⋊D8911yescharacteristic
382C22×D4—21no—
383C22×D4—21no—
384C22×D4C2×Dic8911yescharacteristic
385C22×D4C22⋊D8911yescharacteristic
386C22×D4C22×D8911yescharacteristic
387C23×C4—21no—
388C23×C4—22no—
389C23×C4—21no—
390C23×C4—41no—
391C23×C4—42no—
392C23×C4—41no—
393C23×C4C2×Dic8911yescharacteristic
394C23×C4C2×Dic8911yescharacteristic
395C23×C4C2×Dic8914yescomplemented
396C23×C4C22⋊D8911yescharacteristic
397C23×C4C22⋊D8911yescharacteristic
398C2×M16—3561no—
399C2×M16—3562no—
400C2×M16—1782no—
401C2×M16—1784no—
402C22×C8—3561no—
403#123—22no—
404#123—21no—
405#123—21no—
406#123C2×Dic8912yes—
407#123C2×Dic8914yescomplemented
408#123C22×D8912yes—
409C22⋊Q8—24no—
410C22⋊Q8—24no—
411#121—24no—
412#121—24no—
413#120—22no—
414#120—21no—
415#120—21no—
416#120C2×Dic8912yes—
417#120C2×Dic8914yescomplemented
418#120C22×D8912yes—
419C4×D4—24no—
420C4×D4—24no—
421C4×D4—24no—
422C4×D4—24no—
423#117—22no—
424#117—3562no—
425#117—1784no—
426#117C2×Dic8914yescomplemented
427C2×C4⋊C4—21no—
428C2×C4⋊C4—21no—
429C2×C4⋊C4—21no—
430C2×C4⋊C4—3561no—
431C2×C22⋊C4—21no—
432C2×C22⋊C4—21no—
433C2×C22⋊C4—21no—
434C2×C22⋊C4—21no—
435C2×C22⋊C4—1782no—
436C2×C22⋊C4C2×Dic8911yescharacteristic
437C2×C22⋊C4C2×Dic8911yescharacteristic
438C2×C42—21no—
439C2×C42—3561no—
440#101—1784no—
441#100—894no—
442#100—1782no—
443#99—894no—
444#99—1782no—
445#99—1784no—
446C24—21no—
447C24—21no—
448C24—41no—
449C24—41no—
450C24—44no—
451C24C22⋊Dic8911yescharacteristic
452C24C22×Dic8911yescharacteristic
453C24C22×Dic8912yes—
454C24C2×C22⋊D8911yescharacteristic
455#41—42no—
456#41—42no—
457#41—42no—
458#41—42no—
459#41—42no—
460#41—42no—
461#41—42no—
462#41—42no—
463C2×Q8—41no—
464C2×Q8—41no—
465C2×Q8C22⋊Dic8912yes—
466C2×Q8C2×C22⋊D8912yes—
467C2×D4—22no—
468C2×D4—22no—
469C2×D4—24no—
470C2×D4—41no—
471C2×D4—41no—
472C2×D4—41no—
473C2×D4—41no—
474C2×D4—41no—
475C2×D4—41no—
476C2×D4—44no—
477C2×D4—44no—
478C2×D4C22⋊Dic8912yes—
479C2×D4C22⋊Dic8912yes—
480C2×D4C22×Dic8911yescharacteristic
481C2×D4C22×Dic8912yes—
482C2×D4C2×C22⋊D8911yescharacteristic
483C2×D4C2×C22⋊D8911yescharacteristic
484C2×D4C2×C22⋊D8912yes—
485C2×D4C23×D8911yescharacteristic
486C22×C4—21no—
487C22×C4—22no—
488C22×C4—21no—
489C22×C4—22no—
490C22×C4—22no—
491C22×C4—21no—
492C22×C4—21no—
493C22×C4—21no—
494C22×C4—21no—
495C22×C4—21no—
496C22×C4—21no—
497C22×C4—21no—
498C22×C4—21no—
499C22×C4—24no—
500C22×C4—24no—
501C22×C4—42no—
502C22×C4—42no—
503C22×C4—44no—
504C22×C4—44no—
505C22×C4—44no—
506C22×C4—44no—
507C22×C4—42no—
508C22×C4—41no—
509C22×C4—41no—
510C22×C4—41no—
511C22×C4—41no—
512C22×C4—3562no—
513C22×C4C22⋊Dic8911yescharacteristic
514C22×C4C22⋊Dic8911yescharacteristic
515C22×C4C22⋊Dic8912yes—
516C22×C4C22⋊Dic8912yes—
517C22×C4C22⋊Dic8912yes—
518C22×C4C22⋊Dic8911yescharacteristic
519C22×C4C22×Dic8912yes—
520C22×C4C22×Dic8912yes—
521C22×C4C2×C22⋊D8911yescharacteristic
522C22×C4C2×C22⋊D8912yes—
523C22×C4C2×C22⋊D8912yes—
524M16—3562no—
525M16—3564no—
526M16—1784no—
527C2×C8—3562no—
528C2×C8—3564no—
529C4⋊C4—22no—
530C4⋊C4—24no—
531C4⋊C4—22no—
532C4⋊C4—24no—
533C4⋊C4—3564no—
534C22⋊C4—22no—
535C22⋊C4—22no—
536C22⋊C4—24no—
537C22⋊C4—21no—
538C22⋊C4—21no—
539C22⋊C4—22no—
540C22⋊C4—22no—
541C22⋊C4—24no—
542C22⋊C4—3562no—
543C22⋊C4—1784no—
544C22⋊C4C22×Dic8912yes—
545C22⋊C4C22×Dic8912yes—
546C42—24no—
547C42—3564no—
548C23—24no—
549C23—22no—
550C23—21no—
551C23—21no—
552C23—21no—
553C23—21no—
554C23—21no—
555C23—21no—
556C23—42no—
557C23—42no—
558C23—44no—
559C23—42no—
560C23—42no—
561C23—44no—
562C23—42no—
563C23—42no—
564C23—44no—
565C23—48no—
566C23—44no—
567C23—41no—
568C23—41no—
569C23C2×C22⋊Dic8911yescharacteristic
570C23C2×C22⋊Dic8911yescharacteristic
571C23C2×C22⋊Dic8911yescharacteristic
572C23C2×C22⋊Dic8912yes—
573C23C23×Dic8911yescharacteristic
574C23C22×C22⋊D8911yescharacteristic
575Q8—42no—
576Q8—42no—
577D4—42no—
578D4—42no—
579D4—42no—
580D4—41no—
581D4—41no—
582D4—42no—
583D4—41no—
584D4—41no—
585D4—44no—
586D4—44no—
587D4—48no—
588C2×C4—21no—
589C2×C4—21no—
590C2×C4—21no—
591C2×C4—21no—
592C2×C4—21no—
593C2×C4—21no—
594C2×C4—22no—
595C2×C4—22no—
596C2×C4—22no—
597C2×C4—22no—
598C2×C4—22no—
599C2×C4—22no—
600C2×C4—22no—
601C2×C4—22no—
602C2×C4—22no—
603C2×C4—22no—
604C2×C4—22no—
605C2×C4—22no—
606C2×C4—22no—
607C2×C4—22no—
608C2×C4—22no—
609C2×C4—48no—
610C2×C4—42no—
611C2×C4—42no—
612C2×C4—42no—
613C2×C4—41no—
614C2×C4—41no—
615C2×C4—44no—
616C2×C4—44no—
617C2×C4—42no—
618C2×C4—3564no—
619C2×C4—7124no—
620C2×C4#1566792711yescharacteristic
621C2×C4#1566792712yes—
622C2×C4#1566792711yescharacteristic
623C2×C4C2×C22⋊Dic8912yes—
624C2×C4C2×C22⋊Dic8911yescharacteristic
625C2×C4C2×C22⋊Dic8912yes—
626C2×C4C2×C22⋊Dic8912yes—
627C2×C4C22×C22⋊D8911yescharacteristic
628C8—3564no—
629C22—22no—
630C22—24no—
631C22—21no—
632C22—21no—
633C22—21no—
634C22—22no—
635C22—21no—
636C22—41no—
637C22—42no—
638C22—41no—
639C22—41no—
640C22—41no—
641C22—42no—
642C22—44no—
643C22—42no—
644C22—44no—
645C22—44no—
646C22—48no—
647C22—42no—
648C22—44no—
649C22—42no—
650C22—42no—
651C22—42no—
652C22—81no—
653C22—81no—
654C22C2×#1566792711yescharacteristic
655C22C2×#1566792711yescharacteristic
656C22C22×C22⋊Dic8911yescharacteristic
657C4—21no—
658C4—22no—
659C4—21no—
660C4—22no—
661C4—42no—
662C4—42no—
663C4—42no—
664C4—7124no—
665C4C2×#1566792712yes—
666C4C2×#1566792712yes—
667C2—21no—
668C2—21no—
669C2—41no—
670C2—44no—
671C2—41no—
672C2—41no—
673C2—41no—
674C2—42no—
675C2#2602189312yesdirect product factor
676C2C22×#1566792711yescharacteristic
subgroupG/H
centerC2×C4#15667927
commutatorC23×C89C23×C4
FrattiniC2×D4C23×D89
Fitting, prime radicalC2×#525×C89C2
socleC22×C89C2×#99
cosocleC2×D4×C89C24
hypercenterC2×#525D89
hypocenterC89C2×#2120
LCSG ▷ C23×C89 ▷ C22×C89 ▷ C2×C89 ▷ C89
UCSC1 ◁ C2×C4 ◁ C22×C4 ◁ C22×#41 ◁ C2×#525

Complements

Splittings G = N ⋊ H with N normal; H ≅ G/N.

NH ≅ G/Ntype
1. C2×#19151582C2semidirect
2. C2×#19151572C2semidirect
3. #26021893C2direct (N × H)
4. C2×#19151388C2semidirect
5. C2×#19151385C2semidirect
10. #19151582C22semidirect
14. #19151572C22semidirect
17. #19151388C22semidirect
18. #19151385C22semidirect
20. C24×C4×C89C4semidirect
23. #525×C89C4semidirect
25. C2×#123×C89C4semidirect
29. C2×#120×C89C4semidirect
33. C2×#117×C89C4semidirect
72. C23×C4×C89C2×C4semidirect
79. #123×C89C2×C4semidirect
89. #120×C89C2×C4semidirect
96. #117×C89C2×C4semidirect
337. C2×C89#2120semidirect
345. C89C2×#2120semidirect
347. C24×C4Dic89semidirect
351. #525Dic89semidirect
353. C2×#123Dic89semidirect
357. C2×#120Dic89semidirect
362. C2×#117Dic89semidirect
395. C23×C4C2×Dic89semidirect
407. #123C2×Dic89semidirect
417. #120C2×Dic89semidirect
426. #117C2×Dic89semidirect
675. C2#26021893direct (N × H)

Maximal subgroups

By isomorphism type — maximal subgroups of the same type appear once, whether or not they are normal.

subgroupindex
C2×#191515822
C2×#191515722
#260218932
C2×#191513882
C2×#191513852
C2×#525×C892
C2×#212089