Finite Group Databasebeta

← C2×#21455499 #30547248

Subgroups — C2×#21455499 #30547248

Order 15616.

2934 conjugacy classes of subgroups.

The subgroup lattice has 666 nodes — too large to display as a diagram.

Conjugacy classes of subgroups

#subgroupG/Hclass sizemultiplicitynormal?properties
1C22×#14519805C211yesmaximal, characteristic, complemented
2C2×#16840340C211yesmaximal, characteristic, complemented
3C2×#16840326C211yesmaximal, characteristic, complemented
4#21455499C2116yesmaximal, direct product factor
5C2×#16840015C212yesmaximal, complemented
6C2×#16840008C212yesmaximal, complemented
7C2×#16839998C212yesmaximal, complemented
8C2×#16839991C212yesmaximal, complemented
9C2×#16839804C211yesmaximal, characteristic, complemented
10C2×#16839759C211yesmaximal, characteristic, complemented
11C22×#14519699C211yesmaximal, characteristic, complemented
12C22×#131×C61C211yesmaximal, characteristic, complemented
13C22×#11758222C2211yescharacteristic
14C23×D244C2211yescharacteristic
15C2×#14519805—28no—
16C2×#14519805C2218yescomplemented
17C22×#11758190C2212yes—
18C22×D488C2212yes—
19#16840340—24no—
20#16840340C2218yescomplemented
21#16840326—24no—
22#16840326C2218yescomplemented
23C2×#14519773—21no—
24C2×#14519766—21no—
25C2×#14519756C2212yescomplemented
26C2×#14519753—21no—
27C2×#14519751C2212yes—
28C2×#14519751C2212yes—
29C2×#14519751C2212yescomplemented
30C2×#14519749—22no—
31C2×#14519748—21no—
32C2×#14519745—22no—
33C2×#14519736C2211yescharacteristic
34C22×C4⋊Dic61C2211yescharacteristic
35#16840015C22116yescomplemented
36#16840008C22116yescomplemented
37#16839998C22116yescomplemented
38#16839991C22116yescomplemented
39#16839804C2218yescomplemented
40C2×#14519711C2212yescomplemented
41C2×#14519709C2212yescomplemented
42#16839759C2218yescomplemented
43C2×#14519702C2211yescharacteristic, complemented
44C2×#14519702C2211yescharacteristic, complemented
45C2×#14519699C2212yes—
46C2×#14519699C2212yes—
47C2×#14519699C2218yescomplemented
48C2×#14519699C2211yescharacteristic, complemented
49C2×#14519699C2211yescharacteristic, complemented
50C22×#41×C61C2211yescharacteristic
51C2×#131×C61—28no—
52C2×#131×C61C2218yescomplemented
53C22×M16×C61C2211yescharacteristic
54C22×M16×C61C2212yescomplemented
55C23×C8×C61C2211yescharacteristic
56C23×C8×C61C2212yescomplemented
57C24×D61—21no—
58C2×#11758222—22no—
59C2×#11758222—24no—
60C2×#11758222—24no—
61C2×#11758222C2314yes—
62C22×Dic122C2311yescharacteristic
63C22×D244—24no—
64C22×D244—24no—
65C22×D244—21no—
66C22×D244—22no—
67C22×D244C2312yes—
68C22×D244C2311yescharacteristic
69C22×D244C2314yes—
70C22×C22⋊D61—21no—
71C22×C22⋊D61—22no—
72C22×C22⋊D61—22no—
73C22×C22⋊D61—22no—
74C23×Dic61—21no—
75C22×C4×D61—21no—
76#14519805—232no—
77C2×#11758190—28no—
78C2×#11758190C2318yes—
79C2×D488—28no—
80C2×D488C2318yes—
81#14519773—28no—
82#14519766—28no—
83#14519756—24no—
84#14519756C2318yescomplemented
85#14519753—28no—
86#14519751—24no—
87#14519751—24no—
88#14519751—24no—
89#14519751C2318yes—
90#14519751C2318yes—
91#14519751C2318yescomplemented
92#14519749—216no—
93#14519748—28no—
94#14519745—216no—
95#14519736—22no—
96#14519736C2314yes—
97C2×C4⋊Dic61—21no—
98C2×C4⋊Dic61—22no—
99C2×C4⋊Dic61C2312yes—
100C2×C4⋊Dic61C2314yes—
101C2×C4⋊Dic61C2311yescharacteristic
102C2×C4⋊Dic61C2311yescharacteristic
103C2×#11758196—22no—
104C2×C22⋊Dic61—21no—
105C2×C22⋊Dic61—22no—
106C2×#11758198—22no—
107C2×#11758198—22no—
108C2×#11758198—22no—
109C2×C4×Dic61—21no—
110#14519711C2318yescomplemented
111#14519709C2318yescomplemented
112#14519702C2314yescomplemented
113#14519702C2314yescomplemented
114#14519699C2318yes—
115#14519699C2318yes—
116#14519699C2314yescomplemented
117#14519699C2314yescomplemented
118C2×#41×C61—24no—
119C2×#41×C61—24no—
120C2×#41×C61D414yes—
121C2×#41×C61C2314yes—
122C22×Q8×C61D411yescharacteristic
123C22×D4×C61D412yes—
124C22×D4×C61D411yescharacteristic
125C23×C4×C61C2312yes—
126C23×C4×C61C2311yescharacteristic
127#131×C61—232no—
128C2×M16×C61—28no—
129C2×M16×C61D418yescomplemented
130C2×M16×C61C2314yes—
131C2×M16×C61C2318yescomplemented
132C22×C8×C61—24no—
133C22×C8×C61—28no—
134C22×C8×C61C2311yescharacteristic
135C22×C8×C61C2311yescharacteristic
136C22×C8×C61C2314yes—
137C22×C8×C61C2312yes—
138C22×C8×C61C2318yescomplemented
139C24×C61C2×D412yes—
140C24×C61C2×D411yescharacteristic
141C23×D61—21no—
142C23×D61—22no—
143C23×D61—24no—
144C23×D61—44no—
145C23×D61—82no—
146C23×D61—82no—
147#41×C61—216no—
148#41×C61—28no—
149#41×C61—28no—
150C2×Q8×C61—24no—
151C2×Q8×C61C2×D414yes—
152C2×D4×C61—28no—
153C2×D4×C61—24no—
154C2×D4×C61C2×D418yes—
155C2×D4×C61C2×D414yes—
156C22×C4×C61—24no—
157C22×C4×C61—24no—
158C22×C4×C61C2×D412yes—
159C22×C4×C61C2×D414yes—
160C22×C4×C61C2×D411yescharacteristic
161C22×C4×C61C2×D412yes—
162C22×C4×C61C2×D414yes—
163C22×C4×C61#4114yes—
164C22×C4×C61C2414yes—
165C22×C4×C61C2411yescharacteristic
166C22×C4×C61C2412yes—
167C2×C22⋊D61—24no—
168C2×C22⋊D61—28no—
169C2×C22⋊D61—28no—
170C2×C22⋊D61—28no—
171C2×C22⋊D61—44no—
172C2×C22⋊D61—84no—
173C2×C22⋊D61—84no—
174C2×C22⋊D61—84no—
175C22×Dic61—21no—
176C22×Dic61—22no—
177C22×Dic61—21no—
178C22×Dic61—21no—
179C22×Dic61—24no—
180C22×Dic61—82no—
181#11758222—28no—
182#11758222—28no—
183#11758222—48no—
184C2×D244—24no—
185C2×D244—28no—
186C2×D244—22no—
187C2×D244—24no—
188C2×D244—28no—
189C2×D244—22no—
190C2×D244—22no—
191C2×D244—24no—
192C2×D244—21no—
193C2×D244—44no—
194C2×D244—48no—
195C2×D244C2414yes—
196C2×D244C2412yes—
197C2×C4×D61—24no—
198C2×C4×D61—44no—
199C2×Dic122—22no—
200C2×Dic122—22no—
201C2×Dic122—21no—
202C2×Dic122C2412yes—
203M16×C61—216no—
204M16×C61C2×D4116yescomplemented
205C2×C8×C61—22no—
206C2×C8×C61—22no—
207C2×C8×C61—28no—
208C2×C8×C61—216no—
209C2×C8×C61C2×D418yes—
210C2×C8×C61C2412yes—
211C2×C8×C61C2412yes—
212C2×C8×C61C2414yes—
213C22⋊Dic61—24no—
214C22⋊Dic61—28no—
215#11758198—28no—
216#11758198—28no—
217#11758198—28no—
218C4⋊Dic61—24no—
219C4⋊Dic61—22no—
220C4⋊Dic61—21no—
221C4⋊Dic61—21no—
222C4⋊Dic61C2414yes—
223C4⋊Dic61C2412yes—
224C4⋊Dic61C2412yes—
225#11758196—28no—
226C4×Dic61—24no—
227D488—216no—
228#11758190—216no—
229C23×C61—22no—
230C23×C61—22no—
231C23×C61—24no—
232C23×C61—24no—
233C23×C61—24no—
234C23×C61#12114yes—
235C23×C61C22×D414yes—
236C23×C61C22×D412yes—
237C23×C61C22×D411yescharacteristic
238C22×D61—22no—
239C22×D61—24no—
240C22×D61—42no—
241C22×D61—48no—
242C22×D61—44no—
243C22×D61—42no—
244C22×D61—44no—
245C22×D61—44no—
246C22×D61—42no—
247C22×D61—84no—
248C22×D61—84no—
249C22×D61—816no—
250Q8×C61—28no—
251D4×C61—216no—
252D4×C61—28no—
253C2×C4×C61—24no—
254C2×C4×C61—28no—
255C2×C4×C61—24no—
256C2×C4×C61—24no—
257C2×C4×C61#12114yes—
258C2×C4×C61#12118yes—
259C2×C4×C61C22×D414yes—
260C2×C4×C61C22×D412yes—
261C2×C4×C61C22×D411yescharacteristic
262C2×C4×C61C22×D412yes—
263C2×C4×C61C22×D414yes—
264C2×C4×C61C2×#4112yes—
265C2×C4×C61C2×#4114yes—
266C2×C4×C61C2511yescharacteristic
267C22⋊D61—48no—
268C22⋊D61—88no—
269C22⋊D61—88no—
270C22⋊D61—88no—
271C2×Dic61—22no—
272C2×Dic61—22no—
273C2×Dic61—22no—
274C2×Dic61—24no—
275C2×Dic61—42no—
276C2×Dic61—44no—
277C2×Dic61—42no—
278C2×Dic61—42no—
279C2×Dic61—84no—
280D244—24no—
281D244—22no—
282D244—24no—
283D244—22no—
284D244—44no—
285D244—48no—
286D244—42no—
287C4×D61—48no—
288Dic122—22no—
289Dic122—22no—
290Dic122—42no—
291C8×C61—22no—
292C8×C61—22no—
293C8×C61C22×D418yes—
294C2×#3062—611nomaximal, Sylow
295C22×C61—28no—
296C22×C61—22no—
297C22×C61—22no—
298C22×C61—24no—
299C22×C61—24no—
300C22×C61—24no—
301C22×C61—48no—
302C22×C61C2×#12114yes—
303C22×C61C2×#12112yes—
304C22×C61#57612yes—
305C22×C61#57712yes—
306C22×C61C23×D411yescharacteristic
307C2×D61—42no—
308C2×D61—44no—
309C2×D61—42no—
310C2×D61—44no—
311C2×D61—44no—
312C2×D61—42no—
313C2×D61—816no—
314C2×D61—84no—
315C2×D61—88no—
316C4×C61—24no—
317C4×C61C2×#12112yes—
318C4×C61C2×#12114yes—
319C4×C61C23×D411yescharacteristic
320C4×C61C22×#4111yescharacteristic
321Dic61—42no—
322Dic61—44no—
323Dic61—42no—
324Dic61—42no—
325C22×AGL(1,ℤ/8)—611no—
326C22×#131D6111yescharacteristic, complemented
327C2×#537—611no—
328C2×#535—611no—
329#3062—6116no—
330C2×#469—612no—
331C2×#468—612no—
332C2×#466—612no—
333C2×#465—612no—
334C2×#428—611no—
335C2×#416—611no—
336C22×#102—611no—
337C2×C61—24no—
338C2×C61—44no—
339C2×C61#306214yescomplemented
340C2×C61C22×#12111yescharacteristic
341C2×C61C2×#57611yescharacteristic
342C2×C61C2×#57711yescharacteristic
343D61—82no—
344D61—84no—
345C22×#41—611no—
346C22×#41C2×D6111yescharacteristic
347C23×D4—611no—
348C2×AGL(1,ℤ/8)—618no—
349C2×AGL(1,ℤ/8)—1228no—
350C22×SD16—612no—
351C22×D8—612no—
352C2×#131—28no—
353C2×#131C2×D6118yescomplemented
354C22×M16C2×D6111yescharacteristic
355C22×M16C2×D6112yescomplemented
356C23×C8C2×D6111yescharacteristic
357C23×C8C2×D6112yescomplemented
358#537—618no—
359#537—1224no—
360#535—618no—
361#535—1224no—
362C2×#127—1221no—
363C2×#124—1221no—
364C2×C22⋊Q8—612no—
365C2×C22⋊Q8—1221no—
366C2×#121—612no—
367C2×#121—612no—
368C2×#121—612no—
369C2×#121—1221no—
370C2×#121—1222no—
371C2×#120—1222no—
372C2×#117—611no—
373C22×C4⋊C4—611no—
374#469—6116no—
375#468—6116no—
376#466—6116no—
377#465—6116no—
378#428—618no—
379C2×#107—612no—
380C2×#106—612no—
381#416—618no—
382C2×#103—611no—
383C2×#103—611no—
384C2×#102—612no—
385C2×#102—612no—
386C2×#102—618no—
387C2×#102—611no—
388C2×#102—611no—
389C61C2×#306211yescharacteristic, complemented, Sylow
390C25—1221no—
391C2×#41—24no—
392C2×#41—24no—
393C2×#41—614no—
394C2×#41—1222no—
395C2×#41—1224no—
396C2×#41—1224no—
397C2×#41D24414yes—
398C2×#41C22×D6114yes—
399C22×Q8—611no—
400C22×Q8D24411yescharacteristic
401C22×D4—611no—
402C22×D4—612no—
403C22×D4—614no—
404C22×D4—1222no—
405C22×D4—1222no—
406C22×D4—1222no—
407C22×D4—1221no—
408C22×D4—1221no—
409C22×D4—1222no—
410C22×D4—1224no—
411C22×D4—1224no—
412C22×D4D24412yes—
413C22×D4D24411yescharacteristic
414C23×C4—1221no—
415C23×C4—1221no—
416C23×C4C22×D6112yes—
417C23×C4C22×D6111yescharacteristic
418AGL(1,ℤ/8)—12232no—
419C2×SD16—618no—
420C2×SD16—1228no—
421C2×D8—618no—
422C2×D8—1228no—
423#131—232no—
424C2×M16—28no—
425C2×M16C22⋊D6118yescomplemented
426C2×M16C22×D6114yes—
427C2×M16C22×D6118yescomplemented
428C22×C8—24no—
429C22×C8—28no—
430C22×C8C22×D6111yescharacteristic
431C22×C8C22×D6111yescharacteristic
432C22×C8C22×D6114yes—
433C22×C8C22×D6112yes—
434C22×C8C22×D6118yescomplemented
435#127—1228no—
436#124—1228no—
437C22⋊Q8—618no—
438C22⋊Q8—1228no—
439C22⋊Q8—1224no—
440#121—618no—
441#121—618no—
442#121—618no—
443#121—1228no—
444#121—12216no—
445#121—1224no—
446#121—1224no—
447#121—1224no—
448#120—12216no—
449#117—614no—
450#117—1222no—
451C2×C4⋊C4—612no—
452C2×C4⋊C4—614no—
453C2×C4⋊C4—611no—
454C2×C4⋊C4—611no—
455C2×C4⋊C4—1221no—
456C2×C4⋊C4—1222no—
457C2×C4⋊C4—1222no—
458C2×C22⋊C4—1221no—
459C2×C22⋊C4—1222no—
460C2×C22⋊C4—1222no—
461C2×C22⋊C4—1222no—
462C2×C22⋊C4—1222no—
463C2×C42—1221no—
464#107—618no—
465#106—618no—
466#103—614no—
467#103—614no—
468#102—618no—
469#102—618no—
470#102—614no—
471#102—614no—
472C24—1224no—
473C24—1221no—
474C24—1222no—
475C24—4882no—
476C24—4882no—
477C24—2444no—
478C24C2×D24412yes—
479C24C2×D24411yescharacteristic
480#41—28no—
481#41—28no—
482#41—216no—
483#41—1228no—
484#41—1228no—
485#41—2448no—
486C2×Q8—24no—
487C2×Q8—612no—
488C2×Q8—1221no—
489C2×Q8—1222no—
490C2×Q8—1222no—
491C2×Q8C2×D24414yes—
492C2×D4—28no—
493C2×D4—24no—
494C2×D4—612no—
495C2×D4—614no—
496C2×D4—1228no—
497C2×D4—1228no—
498C2×D4—1228no—
499C2×D4—1224no—
500C2×D4—1222no—
501C2×D4—1224no—
502C2×D4—1228no—
503C2×D4—1222no—
504C2×D4—1221no—
505C2×D4—1224no—
506C2×D4—1224no—
507C2×D4—1228no—
508C2×D4—1222no—
509C2×D4—4884no—
510C2×D4—4884no—
511C2×D4—4884no—
512C2×D4—2444no—
513C2×D4—2444no—
514C2×D4—2448no—
515C2×D4C2×D24418yes—
516C2×D4C2×D24414yes—
517C22×C4—24no—
518C22×C4—24no—
519C22×C4—1224no—
520C22×C4—1221no—
521C22×C4—1221no—
522C22×C4—1222no—
523C22×C4—1221no—
524C22×C4—1224no—
525C22×C4—4882no—
526C22×C4—2444no—
527C22×C4C2×D24414yes—
528C22×C4C2×D24412yes—
529C22×C4C2×D24412yes—
530C22×C4C2×D24411yescharacteristic
531C22×C4#1175822214yes—
532C22×C4C2×C22⋊D6114yes—
533C22×C4C23×D6114yes—
534C22×C4C23×D6112yes—
535C22×C4C23×D6111yescharacteristic
536SD16—12216no—
537D8—12216no—
538M16—216no—
539M16C2×C22⋊D61116yescomplemented
540C2×C8—22no—
541C2×C8—22no—
542C2×C8—28no—
543C2×C8—216no—
544C2×C8C2×C22⋊D6118yes—
545C2×C8C23×D6112yes—
546C2×C8C23×D6112yes—
547C2×C8C23×D6114yes—
548C4⋊C4—614no—
549C4⋊C4—612no—
550C4⋊C4—612no—
551C4⋊C4—1224no—
552C4⋊C4—1222no—
553C4⋊C4—1221no—
554C4⋊C4—1221no—
555C4⋊C4—1228no—
556C22⋊C4—1224no—
557C22⋊C4—1228no—
558C22⋊C4—1228no—
559C22⋊C4—1228no—
560C22⋊C4—1228no—
561C42—1224no—
562C23—22no—
563C23—22no—
564C23—24no—
565C23—24no—
566C23—24no—
567C23—1222no—
568C23—1224no—
569C23—48816no—
570C23—4884no—
571C23—4884no—
572C23—2442no—
573C23—2448no—
574C23—2444no—
575C23—2442no—
576C23—2444no—
577C23—2444no—
578C23—2442no—
579C23#1451975114yes—
580C23C22×D24414yes—
581C23C22×D24412yes—
582C23C22×D24411yescharacteristic
583Q8—28no—
584Q8—1222no—
585Q8—1222no—
586Q8—2442no—
587D4—216no—
588D4—28no—
589D4—1222no—
590D4—1224no—
591D4—1224no—
592D4—1222no—
593D4—4888no—
594D4—4888no—
595D4—4888no—
596D4—2448no—
597D4—2444no—
598D4—2448no—
599D4—2442no—
600C2×C4—24no—
601C2×C4—28no—
602C2×C4—24no—
603C2×C4—24no—
604C2×C4—1222no—
605C2×C4—1222no—
606C2×C4—1224no—
607C2×C4—1222no—
608C2×C4—4884no—
609C2×C4—2442no—
610C2×C4—2444no—
611C2×C4—2442no—
612C2×C4—2442no—
613C2×C4—2448no—
614C2×C4#1451975114yes—
615C2×C4#1451975118yes—
616C2×C4C22×C22⋊D6112yes—
617C2×C4C22×C22⋊D6114yes—
618C2×C4C22×D24414yes—
619C2×C4C22×D24412yes—
620C2×C4C22×D24411yescharacteristic
621C2×C4C2×#1175822212yes—
622C2×C4C2×#1175822214yes—
623C2×C4C24×D6111yescharacteristic
624C8—22no—
625C8—22no—
626C8C22×C22⋊D6118yes—
627C22—22no—
628C22—22no—
629C22—28no—
630C22—24no—
631C22—24no—
632C22—24no—
633C22—48no—
634C22—48816no—
635C22—4888no—
636C22—4884no—
637C22—2442no—
638C22—2444no—
639C22—2442no—
640C22—2444no—
641C22—2444no—
642C22—2442no—
643C22C2×#1451975114yes—
644C22C2×#1451975112yes—
645C22#1684056712yes—
646C22#1684057412yes—
647C22C23×D24411yescharacteristic
648C4—24no—
649C4—2444no—
650C4—2442no—
651C4—2442no—
652C4—2442no—
653C4C2×#1451975112yes—
654C4C2×#1451975114yes—
655C4C23×C22⋊D6111yescharacteristic
656C4C22×#1175822211yescharacteristic
657C2—24no—
658C2—44no—
659C2—4884no—
660C2—4882no—
661C2#2145549914yesdirect product factor
662C2C22×#1451975111yescharacteristic
663C2C2×#1684056711yescharacteristic
664C2C2×#1684057411yescharacteristic
subgroupG/H
centerC23C22×D244
commutator, cosocleC2×C4×C61C25
FrattiniC2×C4C24×D61
FittingC22×#131×C61C2
socleC23×C61C22×D4
hypercenterC22×#131D61
hypocenterC61C2×#3062
LCSG ▷ C2×C4×C61 ▷ C2×C61 ▷ C61
UCSC1 ◁ C23 ◁ C22×#41 ◁ C22×#131

Complements

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

NH ≅ G/Ntype
1. C22×#14519805C2semidirect
2. C2×#16840340C2semidirect
3. C2×#16840326C2semidirect
4. #21455499C2direct (N × H)
5. C2×#16840015C2semidirect
6. C2×#16840008C2semidirect
7. C2×#16839998C2semidirect
8. C2×#16839991C2semidirect
9. C2×#16839804C2semidirect
10. C2×#16839759C2semidirect
11. C22×#14519699C2semidirect
12. C22×#131×C61C2semidirect
16. C2×#14519805C22semidirect
20. #16840340C22semidirect
22. #16840326C22semidirect
25. C2×#14519756C22semidirect
29. C2×#14519751C22semidirect
35. #16840015C22semidirect
36. #16840008C22semidirect
37. #16839998C22semidirect
38. #16839991C22semidirect
39. #16839804C22semidirect
40. C2×#14519711C22semidirect
41. C2×#14519709C22semidirect
42. #16839759C22semidirect
43. C2×#14519702C22semidirect
44. C2×#14519702C22semidirect
47. C2×#14519699C22semidirect
48. C2×#14519699C22semidirect
49. C2×#14519699C22semidirect
52. C2×#131×C61C22semidirect
54. C22×M16×C61C22semidirect
56. C23×C8×C61C22semidirect
84. #14519756C23semidirect
91. #14519751C23semidirect
110. #14519711C23semidirect
111. #14519709C23semidirect
112. #14519702C23semidirect
113. #14519702C23semidirect
116. #14519699C23semidirect
117. #14519699C23semidirect
129. C2×M16×C61D4semidirect
131. C2×M16×C61C23semidirect
138. C22×C8×C61C23semidirect
204. M16×C61C2×D4semidirect
326. C22×#131D61semidirect
339. C2×C61#3062semidirect
353. C2×#131C2×D61semidirect
355. C22×M16C2×D61semidirect
357. C23×C8C2×D61semidirect
389. C61C2×#3062semidirect
425. C2×M16C22⋊D61semidirect
427. C2×M16C22×D61semidirect
434. C22×C8C22×D61semidirect
539. M16C2×C22⋊D61semidirect
661. C2#21455499direct (N × H)

Maximal subgroups

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

subgroupindex
C22×#145198052
C2×#168403402
C2×#168403262
#214554992
C2×#168400152
C2×#168400082
C2×#168399982
C2×#168399912
C2×#168398042
C2×#168397592
C22×#145196992
C22×#131×C612
C2×#306261