Finite Group Databasebeta

← C2×#20284395 #28251327

Subgroups — C2×#20284395 #28251327

Order 13568.

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×#13133245C211yesmaximal, characteristic, complemented
2C2×#16811201C211yesmaximal, characteristic, complemented
3C2×#16811187C211yesmaximal, characteristic, complemented
4#20284395C2116yesmaximal, direct product factor
5C2×#16810876C212yesmaximal, complemented
6C2×#16810869C212yesmaximal, complemented
7C2×#16810859C212yesmaximal, complemented
8C2×#16810852C212yesmaximal, complemented
9C2×#16810665C211yesmaximal, characteristic, complemented
10C2×#16810620C211yesmaximal, characteristic, complemented
11C22×#13133139C211yesmaximal, characteristic, complemented
12C22×#131×C53C211yesmaximal, characteristic, complemented
13C22×#11719945C2211yescharacteristic
14C23×D212C2211yescharacteristic
15C2×#13133245—28no—
16C2×#13133245C2218yescomplemented
17C22×#11719913C2212yes—
18C22×D424C2212yes—
19#16811201—24no—
20#16811201C2218yescomplemented
21#16811187—24no—
22#16811187C2218yescomplemented
23C2×#13133213—21no—
24C2×#13133206—21no—
25C2×#13133196C2212yescomplemented
26C2×#13133193—21no—
27C2×#13133191C2212yes—
28C2×#13133191C2212yes—
29C2×#13133191C2212yescomplemented
30C2×#13133189—22no—
31C2×#13133188—21no—
32C2×#13133185—22no—
33C2×#13133176C2211yescharacteristic
34C22×C4⋊Dic53C2211yescharacteristic
35#16810876C22116yescomplemented
36#16810869C22116yescomplemented
37#16810859C22116yescomplemented
38#16810852C22116yescomplemented
39#16810665C2218yescomplemented
40C2×#13133151C2212yescomplemented
41C2×#13133149C2212yescomplemented
42#16810620C2218yescomplemented
43C2×#13133142C2211yescharacteristic, complemented
44C2×#13133142C2211yescharacteristic, complemented
45C2×#13133139C2212yes—
46C2×#13133139C2212yes—
47C2×#13133139C2218yescomplemented
48C2×#13133139C2211yescharacteristic, complemented
49C2×#13133139C2211yescharacteristic, complemented
50C22×#41×C53C2211yescharacteristic
51C2×#131×C53—28no—
52C2×#131×C53C2218yescomplemented
53C22×M16×C53C2211yescharacteristic
54C22×M16×C53C2212yescomplemented
55C23×C8×C53C2211yescharacteristic
56C23×C8×C53C2212yescomplemented
57C24×D53—21no—
58C2×#11719945—22no—
59C2×#11719945—24no—
60C2×#11719945—24no—
61C2×#11719945C2314yes—
62C22×Dic106C2311yescharacteristic
63C22×D212—24no—
64C22×D212—24no—
65C22×D212—21no—
66C22×D212—22no—
67C22×D212C2312yes—
68C22×D212C2311yescharacteristic
69C22×D212C2314yes—
70C22×C22⋊D53—21no—
71C22×C22⋊D53—22no—
72C22×C22⋊D53—22no—
73C22×C22⋊D53—22no—
74C23×Dic53—21no—
75C22×C4×D53—21no—
76#13133245—232no—
77C2×#11719913—28no—
78C2×#11719913C2318yes—
79C2×D424—28no—
80C2×D424C2318yes—
81#13133213—28no—
82#13133206—28no—
83#13133196—24no—
84#13133196C2318yescomplemented
85#13133193—28no—
86#13133191—24no—
87#13133191—24no—
88#13133191—24no—
89#13133191C2318yes—
90#13133191C2318yes—
91#13133191C2318yescomplemented
92#13133189—216no—
93#13133188—28no—
94#13133185—216no—
95#13133176—22no—
96#13133176C2314yes—
97C2×C4⋊Dic53—21no—
98C2×C4⋊Dic53—22no—
99C2×C4⋊Dic53C2312yes—
100C2×C4⋊Dic53C2314yes—
101C2×C4⋊Dic53C2311yescharacteristic
102C2×C4⋊Dic53C2311yescharacteristic
103C2×#11719919—22no—
104C2×C22⋊Dic53—21no—
105C2×C22⋊Dic53—22no—
106C2×#11719921—22no—
107C2×#11719921—22no—
108C2×#11719921—22no—
109C2×C4×Dic53—21no—
110#13133151C2318yescomplemented
111#13133149C2318yescomplemented
112#13133142C2314yescomplemented
113#13133142C2314yescomplemented
114#13133139C2318yes—
115#13133139C2318yes—
116#13133139C2314yescomplemented
117#13133139C2314yescomplemented
118C2×#41×C53—24no—
119C2×#41×C53—24no—
120C2×#41×C53D414yes—
121C2×#41×C53C2314yes—
122C22×Q8×C53D411yescharacteristic
123C22×D4×C53D412yes—
124C22×D4×C53D411yescharacteristic
125C23×C4×C53C2312yes—
126C23×C4×C53C2311yescharacteristic
127#131×C53—232no—
128C2×M16×C53—28no—
129C2×M16×C53D418yescomplemented
130C2×M16×C53C2314yes—
131C2×M16×C53C2318yescomplemented
132C22×C8×C53—28no—
133C22×C8×C53—24no—
134C22×C8×C53C2311yescharacteristic
135C22×C8×C53C2311yescharacteristic
136C22×C8×C53C2314yes—
137C22×C8×C53C2312yes—
138C22×C8×C53C2318yescomplemented
139C24×C53C2×D412yes—
140C24×C53C2×D411yescharacteristic
141C23×D53—21no—
142C23×D53—22no—
143C23×D53—24no—
144C23×D53—44no—
145C23×D53—82no—
146C23×D53—82no—
147#41×C53—216no—
148#41×C53—28no—
149#41×C53—28no—
150C2×Q8×C53—24no—
151C2×Q8×C53C2×D414yes—
152C2×D4×C53—28no—
153C2×D4×C53—24no—
154C2×D4×C53C2×D418yes—
155C2×D4×C53C2×D414yes—
156C22×C4×C53—24no—
157C22×C4×C53—24no—
158C22×C4×C53C2×D412yes—
159C22×C4×C53C2×D414yes—
160C22×C4×C53C2×D411yescharacteristic
161C22×C4×C53C2×D412yes—
162C22×C4×C53C2×D414yes—
163C22×C4×C53#4114yes—
164C22×C4×C53C2414yes—
165C22×C4×C53C2411yescharacteristic
166C22×C4×C53C2412yes—
167C2×C22⋊D53—24no—
168C2×C22⋊D53—28no—
169C2×C22⋊D53—28no—
170C2×C22⋊D53—28no—
171C2×C22⋊D53—44no—
172C2×C22⋊D53—84no—
173C2×C22⋊D53—84no—
174C2×C22⋊D53—84no—
175C22×Dic53—21no—
176C22×Dic53—21no—
177C22×Dic53—22no—
178C22×Dic53—21no—
179C22×Dic53—24no—
180C22×Dic53—82no—
181#11719945—28no—
182#11719945—28no—
183#11719945—48no—
184C2×D212—22no—
185C2×D212—24no—
186C2×D212—28no—
187C2×D212—24no—
188C2×D212—28no—
189C2×D212—22no—
190C2×D212—22no—
191C2×D212—21no—
192C2×D212—24no—
193C2×D212—44no—
194C2×D212—48no—
195C2×D212C2414yes—
196C2×D212C2412yes—
197C2×C4×D53—24no—
198C2×C4×D53—44no—
199C2×Dic106—22no—
200C2×Dic106—22no—
201C2×Dic106—21no—
202C2×Dic106C2412yes—
203M16×C53—216no—
204M16×C53C2×D4116yescomplemented
205C2×C8×C53—22no—
206C2×C8×C53—22no—
207C2×C8×C53—28no—
208C2×C8×C53—216no—
209C2×C8×C53C2×D418yes—
210C2×C8×C53C2412yes—
211C2×C8×C53C2412yes—
212C2×C8×C53C2414yes—
213C22⋊Dic53—24no—
214C22⋊Dic53—28no—
215#11719921—28no—
216#11719921—28no—
217#11719921—28no—
218C4⋊Dic53—24no—
219C4⋊Dic53—22no—
220C4⋊Dic53—21no—
221C4⋊Dic53—21no—
222C4⋊Dic53C2414yes—
223C4⋊Dic53C2412yes—
224C4⋊Dic53C2412yes—
225#11719919—28no—
226C4×Dic53—24no—
227D424—216no—
228#11719913—216no—
229C23×C53—22no—
230C23×C53—22no—
231C23×C53—24no—
232C23×C53—24no—
233C23×C53—24no—
234C23×C53#12114yes—
235C23×C53C22×D414yes—
236C23×C53C22×D412yes—
237C23×C53C22×D411yescharacteristic
238C22×D53—22no—
239C22×D53—24no—
240C22×D53—42no—
241C22×D53—48no—
242C22×D53—44no—
243C22×D53—42no—
244C22×D53—44no—
245C22×D53—44no—
246C22×D53—42no—
247C22×D53—84no—
248C22×D53—84no—
249C22×D53—816no—
250Q8×C53—28no—
251D4×C53—216no—
252D4×C53—28no—
253C2×C4×C53—24no—
254C2×C4×C53—28no—
255C2×C4×C53—24no—
256C2×C4×C53—24no—
257C2×C4×C53#12114yes—
258C2×C4×C53#12118yes—
259C2×C4×C53C22×D412yes—
260C2×C4×C53C22×D414yes—
261C2×C4×C53C22×D414yes—
262C2×C4×C53C22×D411yescharacteristic
263C2×C4×C53C22×D412yes—
264C2×C4×C53C2×#4112yes—
265C2×C4×C53C2×#4114yes—
266C2×C4×C53C2511yescharacteristic
267C22⋊D53—48no—
268C22⋊D53—88no—
269C22⋊D53—88no—
270C22⋊D53—88no—
271C2×Dic53—22no—
272C2×Dic53—24no—
273C2×Dic53—22no—
274C2×Dic53—22no—
275C2×Dic53—42no—
276C2×Dic53—44no—
277C2×Dic53—42no—
278C2×Dic53—42no—
279C2×Dic53—84no—
280D212—24no—
281D212—22no—
282D212—24no—
283D212—22no—
284D212—44no—
285D212—48no—
286D212—42no—
287C4×D53—48no—
288Dic106—22no—
289Dic106—22no—
290Dic106—42no—
291C8×C53—22no—
292C8×C53—22no—
293C8×C53C22×D418yes—
294C2×#3062—531nomaximal, Sylow
295C22×C53—28no—
296C22×C53—22no—
297C22×C53—22no—
298C22×C53—24no—
299C22×C53—24no—
300C22×C53—24no—
301C22×C53—48no—
302C22×C53C2×#12114yes—
303C22×C53C2×#12112yes—
304C22×C53#57612yes—
305C22×C53#57712yes—
306C22×C53C23×D411yescharacteristic
307C2×D53—42no—
308C2×D53—44no—
309C2×D53—42no—
310C2×D53—44no—
311C2×D53—44no—
312C2×D53—42no—
313C2×D53—816no—
314C2×D53—84no—
315C2×D53—88no—
316C4×C53—24no—
317C4×C53C2×#12112yes—
318C4×C53C2×#12114yes—
319C4×C53C23×D411yescharacteristic
320C4×C53C22×#4111yescharacteristic
321Dic53—42no—
322Dic53—44no—
323Dic53—42no—
324Dic53—42no—
325C22×AGL(1,ℤ/8)—531no—
326C22×#131D5311yescharacteristic, complemented
327C2×#537—531no—
328C2×#535—531no—
329#3062—5316no—
330C2×#469—532no—
331C2×#468—532no—
332C2×#466—532no—
333C2×#465—532no—
334C2×#428—531no—
335C2×#416—531no—
336C22×#102—531no—
337C2×C53—24no—
338C2×C53—44no—
339C2×C53#306214yescomplemented
340C2×C53C22×#12111yescharacteristic
341C2×C53C2×#57611yescharacteristic
342C2×C53C2×#57711yescharacteristic
343D53—82no—
344D53—84no—
345C22×#41—531no—
346C22×#41C2×D5311yescharacteristic
347C23×D4—531no—
348C2×AGL(1,ℤ/8)—538no—
349C2×AGL(1,ℤ/8)—1068no—
350C22×SD16—532no—
351C22×D8—532no—
352C2×#131—28no—
353C2×#131C2×D5318yescomplemented
354C22×M16C2×D5311yescharacteristic
355C22×M16C2×D5312yescomplemented
356C23×C8C2×D5311yescharacteristic
357C23×C8C2×D5312yescomplemented
358#537—538no—
359#537—1064no—
360#535—538no—
361#535—1064no—
362C2×#127—1061no—
363C2×#124—1061no—
364C2×C22⋊Q8—532no—
365C2×C22⋊Q8—1061no—
366C2×#121—532no—
367C2×#121—532no—
368C2×#121—532no—
369C2×#121—1061no—
370C2×#121—1062no—
371C2×#120—1062no—
372C2×#117—531no—
373C22×C4⋊C4—531no—
374#469—5316no—
375#468—5316no—
376#466—5316no—
377#465—5316no—
378#428—538no—
379C2×#107—532no—
380C2×#106—532no—
381#416—538no—
382C2×#103—531no—
383C2×#103—531no—
384C2×#102—532no—
385C2×#102—532no—
386C2×#102—538no—
387C2×#102—531no—
388C2×#102—531no—
389C53C2×#306211yescharacteristic, complemented, Sylow
390C25—1061no—
391C2×#41—24no—
392C2×#41—24no—
393C2×#41—534no—
394C2×#41—1062no—
395C2×#41—1064no—
396C2×#41—1064no—
397C2×#41D21214yes—
398C2×#41C22×D5314yes—
399C22×Q8—531no—
400C22×Q8D21211yescharacteristic
401C22×D4—531no—
402C22×D4—532no—
403C22×D4—534no—
404C22×D4—1062no—
405C22×D4—1062no—
406C22×D4—1062no—
407C22×D4—1061no—
408C22×D4—1061no—
409C22×D4—1062no—
410C22×D4—1064no—
411C22×D4—1064no—
412C22×D4D21212yes—
413C22×D4D21211yescharacteristic
414C23×C4—1061no—
415C23×C4—1061no—
416C23×C4C22×D5312yes—
417C23×C4C22×D5311yescharacteristic
418AGL(1,ℤ/8)—10632no—
419C2×SD16—538no—
420C2×SD16—1068no—
421C2×D8—538no—
422C2×D8—1068no—
423#131—232no—
424C2×M16—28no—
425C2×M16C22⋊D5318yescomplemented
426C2×M16C22×D5314yes—
427C2×M16C22×D5318yescomplemented
428C22×C8—24no—
429C22×C8—28no—
430C22×C8C22×D5311yescharacteristic
431C22×C8C22×D5311yescharacteristic
432C22×C8C22×D5314yes—
433C22×C8C22×D5312yes—
434C22×C8C22×D5318yescomplemented
435#127—1068no—
436#124—1068no—
437C22⋊Q8—538no—
438C22⋊Q8—1068no—
439C22⋊Q8—1064no—
440#121—538no—
441#121—538no—
442#121—538no—
443#121—1068no—
444#121—10616no—
445#121—1064no—
446#121—1064no—
447#121—1064no—
448#120—10616no—
449#117—534no—
450#117—1062no—
451C2×C4⋊C4—532no—
452C2×C4⋊C4—534no—
453C2×C4⋊C4—531no—
454C2×C4⋊C4—531no—
455C2×C4⋊C4—1061no—
456C2×C4⋊C4—1062no—
457C2×C4⋊C4—1062no—
458C2×C22⋊C4—1061no—
459C2×C22⋊C4—1062no—
460C2×C22⋊C4—1062no—
461C2×C22⋊C4—1062no—
462C2×C22⋊C4—1062no—
463C2×C42—1061no—
464#107—538no—
465#106—538no—
466#103—534no—
467#103—534no—
468#102—538no—
469#102—538no—
470#102—534no—
471#102—534no—
472C24—1064no—
473C24—1061no—
474C24—1062no—
475C24—4242no—
476C24—4242no—
477C24—2124no—
478C24C2×D21212yes—
479C24C2×D21211yescharacteristic
480#41—216no—
481#41—28no—
482#41—28no—
483#41—1068no—
484#41—1068no—
485#41—2128no—
486C2×Q8—24no—
487C2×Q8—532no—
488C2×Q8—1061no—
489C2×Q8—1062no—
490C2×Q8—1062no—
491C2×Q8C2×D21214yes—
492C2×D4—28no—
493C2×D4—24no—
494C2×D4—532no—
495C2×D4—534no—
496C2×D4—1068no—
497C2×D4—1068no—
498C2×D4—1068no—
499C2×D4—1064no—
500C2×D4—1062no—
501C2×D4—1064no—
502C2×D4—1068no—
503C2×D4—1062no—
504C2×D4—1061no—
505C2×D4—1064no—
506C2×D4—1064no—
507C2×D4—1068no—
508C2×D4—1062no—
509C2×D4—4244no—
510C2×D4—4244no—
511C2×D4—4244no—
512C2×D4—2124no—
513C2×D4—2124no—
514C2×D4—2128no—
515C2×D4C2×D21218yes—
516C2×D4C2×D21214yes—
517C22×C4—24no—
518C22×C4—24no—
519C22×C4—1064no—
520C22×C4—1061no—
521C22×C4—1061no—
522C22×C4—1062no—
523C22×C4—1061no—
524C22×C4—1064no—
525C22×C4—4242no—
526C22×C4—2124no—
527C22×C4C2×D21214yes—
528C22×C4C2×D21212yes—
529C22×C4C2×D21212yes—
530C22×C4C2×D21211yescharacteristic
531C22×C4#1171994514yes—
532C22×C4C2×C22⋊D5314yes—
533C22×C4C23×D5314yes—
534C22×C4C23×D5312yes—
535C22×C4C23×D5311yescharacteristic
536SD16—10616no—
537D8—10616no—
538M16—216no—
539M16C2×C22⋊D53116yescomplemented
540C2×C8—22no—
541C2×C8—22no—
542C2×C8—28no—
543C2×C8—216no—
544C2×C8C2×C22⋊D5318yes—
545C2×C8C23×D5312yes—
546C2×C8C23×D5312yes—
547C2×C8C23×D5314yes—
548C4⋊C4—534no—
549C4⋊C4—532no—
550C4⋊C4—532no—
551C4⋊C4—1064no—
552C4⋊C4—1062no—
553C4⋊C4—1061no—
554C4⋊C4—1061no—
555C4⋊C4—1068no—
556C22⋊C4—1064no—
557C22⋊C4—1068no—
558C22⋊C4—1068no—
559C22⋊C4—1068no—
560C22⋊C4—1068no—
561C42—1064no—
562C23—22no—
563C23—22no—
564C23—24no—
565C23—24no—
566C23—24no—
567C23—1062no—
568C23—1064no—
569C23—42416no—
570C23—4244no—
571C23—4244no—
572C23—2122no—
573C23—2128no—
574C23—2124no—
575C23—2122no—
576C23—2124no—
577C23—2124no—
578C23—2122no—
579C23#1313319114yes—
580C23C22×D21214yes—
581C23C22×D21212yes—
582C23C22×D21211yescharacteristic
583Q8—28no—
584Q8—1062no—
585Q8—1062no—
586Q8—2122no—
587D4—216no—
588D4—28no—
589D4—1062no—
590D4—1064no—
591D4—1064no—
592D4—1062no—
593D4—4248no—
594D4—4248no—
595D4—4248no—
596D4—2128no—
597D4—2124no—
598D4—2128no—
599D4—2122no—
600C2×C4—24no—
601C2×C4—28no—
602C2×C4—24no—
603C2×C4—24no—
604C2×C4—1062no—
605C2×C4—1062no—
606C2×C4—1064no—
607C2×C4—1062no—
608C2×C4—4244no—
609C2×C4—2122no—
610C2×C4—2124no—
611C2×C4—2122no—
612C2×C4—2122no—
613C2×C4—2128no—
614C2×C4#1313319114yes—
615C2×C4#1313319118yes—
616C2×C4C22×C22⋊D5312yes—
617C2×C4C22×C22⋊D5314yes—
618C2×C4C22×D21214yes—
619C2×C4C22×D21212yes—
620C2×C4C22×D21211yescharacteristic
621C2×C4C2×#1171994512yes—
622C2×C4C2×#1171994514yes—
623C2×C4C24×D5311yescharacteristic
624C8—22no—
625C8—22no—
626C8C22×C22⋊D5318yes—
627C22—22no—
628C22—22no—
629C22—28no—
630C22—24no—
631C22—24no—
632C22—24no—
633C22—48no—
634C22—42416no—
635C22—4248no—
636C22—4244no—
637C22—2122no—
638C22—2124no—
639C22—2122no—
640C22—2124no—
641C22—2124no—
642C22—2122no—
643C22C2×#1313319114yes—
644C22C2×#1313319112yes—
645C22#1681142812yes—
646C22#1681143512yes—
647C22C23×D21211yescharacteristic
648C4—24no—
649C4—2124no—
650C4—2122no—
651C4—2122no—
652C4—2122no—
653C4C2×#1313319112yes—
654C4C2×#1313319114yes—
655C4C23×C22⋊D5311yescharacteristic
656C4C22×#1171994511yescharacteristic
657C2—24no—
658C2—44no—
659C2—4244no—
660C2—4242no—
661C2#2028439514yesdirect product factor
662C2C22×#1313319111yescharacteristic
663C2C2×#1681142811yescharacteristic
664C2C2×#1681143511yescharacteristic
subgroupG/H
centerC23C22×D212
commutator, cosocleC2×C4×C53C25
FrattiniC2×C4C24×D53
FittingC22×#131×C53C2
socleC23×C53C22×D4
hypercenterC22×#131D53
hypocenterC53C2×#3062
LCSG ▷ C2×C4×C53 ▷ C2×C53 ▷ C53
UCSC1 ◁ C23 ◁ C22×#41 ◁ C22×#131

Complements

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

NH ≅ G/Ntype
1. C22×#13133245C2semidirect
2. C2×#16811201C2semidirect
3. C2×#16811187C2semidirect
4. #20284395C2direct (N × H)
5. C2×#16810876C2semidirect
6. C2×#16810869C2semidirect
7. C2×#16810859C2semidirect
8. C2×#16810852C2semidirect
9. C2×#16810665C2semidirect
10. C2×#16810620C2semidirect
11. C22×#13133139C2semidirect
12. C22×#131×C53C2semidirect
16. C2×#13133245C22semidirect
20. #16811201C22semidirect
22. #16811187C22semidirect
25. C2×#13133196C22semidirect
29. C2×#13133191C22semidirect
35. #16810876C22semidirect
36. #16810869C22semidirect
37. #16810859C22semidirect
38. #16810852C22semidirect
39. #16810665C22semidirect
40. C2×#13133151C22semidirect
41. C2×#13133149C22semidirect
42. #16810620C22semidirect
43. C2×#13133142C22semidirect
44. C2×#13133142C22semidirect
47. C2×#13133139C22semidirect
48. C2×#13133139C22semidirect
49. C2×#13133139C22semidirect
52. C2×#131×C53C22semidirect
54. C22×M16×C53C22semidirect
56. C23×C8×C53C22semidirect
84. #13133196C23semidirect
91. #13133191C23semidirect
110. #13133151C23semidirect
111. #13133149C23semidirect
112. #13133142C23semidirect
113. #13133142C23semidirect
116. #13133139C23semidirect
117. #13133139C23semidirect
129. C2×M16×C53D4semidirect
131. C2×M16×C53C23semidirect
138. C22×C8×C53C23semidirect
204. M16×C53C2×D4semidirect
326. C22×#131D53semidirect
339. C2×C53#3062semidirect
353. C2×#131C2×D53semidirect
355. C22×M16C2×D53semidirect
357. C23×C8C2×D53semidirect
389. C53C2×#3062semidirect
425. C2×M16C22⋊D53semidirect
427. C2×M16C22×D53semidirect
434. C22×C8C22×D53semidirect
539. M16C2×C22⋊D53semidirect
661. C2#20284395direct (N × H)

Maximal subgroups

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

subgroupindex
C22×#131332452
C2×#168112012
C2×#168111872
#202843952
C2×#168108762
C2×#168108692
C2×#168108592
C2×#168108522
C2×#168106652
C2×#168106202
C22×#131331392
C22×#131×C532
C2×#306253