Finite Group Databasebeta

← #421×Dic71 #31995177

Subgroups — #421×Dic71 #31995177

Order 18176.

1618 conjugacy classes of subgroups.

The subgroup lattice has 626 nodes — too large to display as a diagram.

Conjugacy classes of subgroups

#subgroupG/Hclass sizemultiplicitynormal?properties
1C2×#41×Dic71C211yesmaximal, characteristic
2C2×#17986016C211yesmaximal, characteristic
3C2×M16×Dic71C211yesmaximal, characteristic, complemented
4#117×Dic71C211yesmaximal, characteristic, complemented
5#22588152C214yesmaximal, complemented
6#104×Dic71C214yesmaximal, complemented
7#22588051C211yesmaximal, characteristic, complemented
8#22588050C211yesmaximal, characteristic, complemented
9C2×#421×C71C211yesmaximal, characteristic
10C22×#11765849C2211yescharacteristic
11#41×Dic71—22no—
12#41×Dic71—21no—
13#41×Dic71—21no—
14#41×Dic71C414yescomplemented
15#41×Dic71C2212yes—
16#41×Dic71C2212yes—
17C2×Q8×Dic71C412yescomplemented
18C2×D4×Dic71—22no—
19C2×D4×Dic71C412yescomplemented
20C2×#14556087—21no—
21C2×#14556087C2211yescharacteristic
22C2×#14556087C2211yescharacteristic
23C22×C4×Dic71—21no—
24C22×C4×Dic71C2211yescharacteristic
25#17986016C418yescomplemented
26C2×#14556055C2214yes—
27M16×Dic71—21no—
28M16×Dic71—21no—
29M16×Dic71C2212yescomplemented
30M16×Dic71C2212yescomplemented
31C2×#14556038—21no—
32C2×C8×Dic71—21no—
33C4⋊C4×Dic71—22no—
34C22⋊C4×Dic71—22no—
35#17985845C2212yescomplemented
36C42×Dic71C2212yescomplemented
37#17985760C2214yescomplemented
38#17985759C2214yescomplemented
39C22×#41×C71C2211yescharacteristic
40C22×M16×C71C2211yescharacteristic
41C2×#117×C71C2211yescharacteristic
42#421×C71C418yescomplemented
43C2×#104×C71C2214yes—
44C23×Dic71—22no—
45C23×Dic71D412yes—
46C2×#11765849—21no—
47C2×#11765849—22no—
48C2×#11765849C2×C414yescomplemented
49C2×#11765849C2312yes—
50C22×C71⋊C8—21no—
51Q8×Dic71—22no—
52Q8×Dic71—22no—
53Q8×Dic71C2×C414yes—
54Q8×Dic71C2×C414yes—
55D4×Dic71—24no—
56D4×Dic71—24no—
57D4×Dic71—24no—
58D4×Dic71—24no—
59D4×Dic71—22no—
60D4×Dic71—22no—
61D4×Dic71C2×C414yes—
62D4×Dic71C2×C414yes—
63#14556087—24no—
64#14556087—22no—
65#14556087—22no—
66#14556087—21no—
67#14556087—21no—
68#14556087—22no—
69#14556087C2×C412yes—
70#14556087C2×C414yescomplemented
71#14556087C2312yes—
72C2×C4⋊Dic71—22no—
73C2×C4⋊Dic71—21no—
74C2×C4⋊Dic71C2×C412yes—
75C2×C22⋊Dic71—22no—
76C2×C22⋊Dic71—21no—
77C2×C22⋊Dic71—21no—
78C2×C4×Dic71—22no—
79C2×C4×Dic71—24no—
80C2×C4×Dic71—22no—
81C2×C4×Dic71—22no—
82C2×C4×Dic71—24no—
83C2×C4×Dic71—21no—
84C2×C4×Dic71C2×C412yes—
85C2×C4×Dic71C2×C412yes—
86C2×C4×Dic71D412yes—
87C2×C4×Dic71D411yescharacteristic
88C2×C4×Dic71D411yescharacteristic
89C2×C4×Dic71D411yescharacteristic
90C2×C4×Dic71D411yescharacteristic
91C2×C4×Dic71C2312yes—
92C2×C4×Dic71C2311yescharacteristic
93C2×C4×Dic71C2311yescharacteristic
94#14556055C2×C4116yescomplemented
95#14556038—22no—
96#14556038—22no—
97C8×Dic71—22no—
98C8×Dic71—22no—
99C71⋊#95—24no—
100C2×#41×C71—21no—
101C2×#41×C71—21no—
102C2×#41×C71—22no—
103C2×#41×C71—22no—
104C2×#41×C71C2×C414yes—
105C2×#41×C71C2×C414yes—
106C2×#41×C71C2×C412yes—
107C2×#41×C71C2312yes—
108C22×Q8×C71C2×C411yescharacteristic
109C22×D4×C71—21no—
110C22×D4×C71C2×C411yescharacteristic
111C23×C4×C71—21no—
112C23×C4×C71C2311yescharacteristic
113C2×M16×C71—21no—
114C2×M16×C71—22no—
115C2×M16×C71C2×C414yescomplemented
116C2×M16×C71C2312yes—
117C22×C8×C71—21no—
118#117×C71—22no—
119#117×C71C2×C414yescomplemented
120C2×C4⋊C4×C71—21no—
121C2×C22⋊C4×C71—21no—
122C2×C42×C71C2312yes—
123#104×C71C2×C4116yescomplemented
124C22×Dic71—22no—
125C22×Dic71—22no—
126C22×Dic71—24no—
127C22×Dic71—24no—
128C22×Dic71—44no—
129C22×Dic71—48no—
130C22×Dic71C22⋊C412yes—
131C22×Dic71C22⋊C412yes—
132C22×Dic71C22⋊C412yes—
133C22×Dic71C22⋊C412yes—
134C22×Dic71C2×D412yes—
135C22×Dic71C2×D412yes—
136#11765849—24no—
137#11765849—22no—
138#11765849C22×C414yescomplemented
139C2×C71⋊C8—24no—
140C2×C71⋊C8—22no—
141C4⋊Dic71—22no—
142C4⋊Dic71—24no—
143C4⋊Dic71—24no—
144C4⋊Dic71—24no—
145C4⋊Dic71C22×C414yes—
146C22⋊Dic71—22no—
147C22⋊Dic71—24no—
148C22⋊Dic71—22no—
149C22⋊Dic71—24no—
150C22⋊Dic71—24no—
151C4×Dic71—22no—
152C4×Dic71—22no—
153C4×Dic71—22no—
154C4×Dic71—24no—
155C4×Dic71—24no—
156C4×Dic71—48no—
157C4×Dic71C22⋊C412yes—
158C4×Dic71C22⋊C412yes—
159C4×Dic71C22⋊C412yes—
160C4×Dic71C22⋊C412yes—
161C4×Dic71C22×C412yes—
162C4×Dic71C22×C412yes—
163C4×Dic71C22×C414yescomplemented
164C4×Dic71C2×D411yescharacteristic
165C4×Dic71C2×D411yescharacteristic
166C4×Dic71C2×D411yescharacteristic
167C4×Dic71C2×D411yescharacteristic
168C24×C71—21no—
169C24×C71C2×D411yescharacteristic
170#41×C71—24no—
171#41×C71—24no—
172#41×C71—24no—
173#41×C71—24no—
174#41×C71—24no—
175#41×C71—22no—
176#41×C71—22no—
177#41×C71C4218yescomplemented
178#41×C71C22×C414yes—
179#41×C71C22×C414yes—
180C2×Q8×C71—21no—
181C2×Q8×C71—22no—
182C2×Q8×C71C4214yescomplemented
183C2×Q8×C71C22×C412yes—
184C2×D4×C71—22no—
185C2×D4×C71—24no—
186C2×D4×C71—24no—
187C2×D4×C71—22no—
188C2×D4×C71—21no—
189C2×D4×C71—22no—
190C2×D4×C71C4214yescomplemented
191C2×D4×C71C22×C412yes—
192C22×C4×C71—21no—
193C22×C4×C71—22no—
194C22×C4×C71—24no—
195C22×C4×C71—24no—
196C22×C4×C71—22no—
197C22×C4×C71—22no—
198C22×C4×C71C22×C411yescharacteristic
199C22×C4×C71C22×C411yescharacteristic
200C22×C4×C71C22×C412yes—
201C22×C4×C71C22×C412yes—
202C22×C4×C71C2×D411yescharacteristic
203C22×C4×C71C2×D411yescharacteristic
204C22×C4×C71C2×D411yescharacteristic
205C22×C4×C71#4112yes—
206C22×C4×C71#4112yes—
207C22×C4×C71C2411yescharacteristic
208M16×C71—24no—
209M16×C71—22no—
210M16×C71C22×C414yescomplemented
211C2×C8×C71—24no—
212C2×C8×C71—22no—
213C4⋊C4×C71—24no—
214C22⋊C4×C71—24no—
215C42×C71—22no—
216C42×C71C22×C414yescomplemented
217C23×C71—22no—
218C23×C71—24no—
219C23×C71—42no—
220C23×C71—44no—
221C23×C71C2×C22⋊C411yescharacteristic
222C23×C71C2×C22⋊C411yescharacteristic
223C23×C71C4×D412yes—
224C23×C71C4×D412yes—
225C23×C71C22×D411yescharacteristic
226Q8×C71—22no—
227Q8×C71—24no—
228Q8×C71C2×C4214yes—
229D4×C71—24no—
230D4×C71—24no—
231D4×C71—28no—
232D4×C71—22no—
233D4×C71—24no—
234D4×C71C2×C4214yes—
235C2×C4×C71—22no—
236C2×C4×C71—24no—
237C2×C4×C71—24no—
238C2×C4×C71—24no—
239C2×C4×C71—28no—
240C2×C4×C71—24no—
241C2×C4×C71—44no—
242C2×C4×C71C2×C4212yes—
243C2×C4×C71C2×C4212yes—
244C2×C4×C71C2×C22⋊C411yescharacteristic
245C2×C4×C71C2×C22⋊C411yescharacteristic
246C2×C4×C71#11712yes—
247C2×C4×C71#11712yes—
248C2×C4×C71C4×D412yes—
249C2×C4×C71C4×D412yes—
250C2×C4×C71C4×D412yes—
251C2×C4×C71C4×D412yes—
252C2×C4×C71C4×D412yes—
253C2×C4×C71C4×D412yes—
254C2×C4×C71C23×C411yescharacteristic
255C2×C4×C71C23×C411yescharacteristic
256C2×C4×C71C23×C411yescharacteristic
257C2×C4×C71C22×D411yescharacteristic
258C2×C4×C71C2×#4111yescharacteristic
259C2×C4×C71C2×#4111yescharacteristic
260C2×Dic71—24no—
261C2×Dic71—24no—
262C2×Dic71—24no—
263C2×Dic71—24no—
264C2×Dic71—24no—
265C2×Dic71—42no—
266C2×Dic71—42no—
267C2×Dic71—42no—
268C2×Dic71—48no—
269C2×Dic71—44no—
270C2×Dic71—44no—
271C2×Dic71—48no—
272C2×Dic71C2×C22⋊C412yes—
273C2×Dic71C2×C22⋊C412yes—
274C2×Dic71C2×C22⋊C412yes—
275C2×Dic71C2×C22⋊C412yes—
276C8×C71—24no—
277C71⋊C8—24no—
278C22×C71—22no—
279C22×C71—22no—
280C22×C71—22no—
281C22×C71—24no—
282C22×C71—42no—
283C22×C71—42no—
284C22×C71—48no—
285C22×C71—44no—
286C22×C71C4×C22⋊C412yes—
287C22×C71C4×C22⋊C412yes—
288C22×C71C22×C22⋊C411yescharacteristic
289C22×C71C2×C4×D411yescharacteristic
290C22×C71C2×C4×D411yescharacteristic
291C4×C71—24no—
292C4×C71—44no—
293C4×C71C4×C22⋊C412yes—
294C4×C71C4×C22⋊C412yes—
295C4×C71C22×C4211yescharacteristic
296C4×C71C2×#11711yescharacteristic
297C4×C71C2×C4×D411yescharacteristic
298C4×C71C2×C4×D411yescharacteristic
299Dic71—22no—
300Dic71—22no—
301Dic71—22no—
302Dic71—44no—
303Dic71—44no—
304Dic71#42114yesdirect product factor
305C4×#421—711nomaximal, Sylow
306C2×C71—21no—
307C2×C71—21no—
308C2×C71—22no—
309C2×C71—22no—
310C2×C71—44no—
311C2×C71C2×C4×C22⋊C411yescharacteristic
312C2×C71C2×#42112yes—
313C2×C4×#41—711no—
314C2×#421—711no—
315C2×#421D7111yescharacteristic
316C2×C4×M16—711no—
317C4×#117—711no—
318#1759—714no—
319C4×#104—714no—
320#1733—711no—
321#1733—711no—
322C71C4×#42111yescharacteristic, complemented, Sylow
323C22×#41C2×D7111yescharacteristic
324C22×M16—711no—
325C22×M16C2×D7111yescharacteristic
326C4×#41—714no—
327C4×#41—712no—
328C4×#41—712no—
329C4×#41—1422no—
330C4×#41—1421no—
331C4×#41—1421no—
332C2×C4×Q8—712no—
333C2×C4×D4—712no—
334C2×C4×D4—1422no—
335C2×#117—711no—
336C2×#117—711no—
337C2×#117—1421no—
338C2×#117C2×D7111yescharacteristic
339C22×C42—711no—
340C22×C42—1421no—
341#421—718no—
342#421Dic7118yesdirect product factor
343C2×#104—714no—
344C2×#104C2×D7114yes—
345C4×M16—712no—
346C4×M16—712no—
347C4×M16—1421no—
348C4×M16—1421no—
349C2×#97—1421no—
350C2×C4×C8—1421no—
351C4×C4⋊C4—1422no—
352C4×C22⋊C4—1422no—
353#376—712no—
354C43—712no—
355#339—714no—
356#339—714no—
357C2×#41—21no—
358C2×#41—21no—
359C2×#41—22no—
360C2×#41—22no—
361C2×#41C4×D7114yes—
362C2×#41C4×D7112yes—
363C2×#41C2×Dic7114yes—
364C2×#41C22×D7112yes—
365C22×Q8C4×D7111yescharacteristic
366C22×D4—21no—
367C22×D4C4×D7111yescharacteristic
368C23×C4—21no—
369C23×C4—712no—
370C23×C4—1422no—
371C23×C4C22×D7111yescharacteristic
372C2×M16—21no—
373C2×M16—22no—
374C2×M16—714no—
375C2×M16—712no—
376C2×M16—1421no—
377C2×M16—1422no—
378C2×M16C2×Dic7114yescomplemented
379C2×M16C22×D7112yes—
380C22×C8—21no—
381C22×C8—1421no—
382C4×Q8—714no—
383C4×Q8—714no—
384C4×Q8—1422no—
385C4×Q8—1422no—
386C4×D4—714no—
387C4×D4—714no—
388C4×D4—1422no—
389C4×D4—1422no—
390C4×D4—1424no—
391C4×D4—1424no—
392C4×D4—1424no—
393C4×D4—1424no—
394#117—22no—
395#117—714no—
396#117—712no—
397#117—712no—
398#117—1422no—
399#117—1422no—
400#117—1424no—
401#117—1421no—
402#117—1421no—
403#117—1422no—
404#117C2×Dic7114yescomplemented
405C2×C4⋊C4—21no—
406C2×C4⋊C4—712no—
407C2×C4⋊C4—1422no—
408C2×C4⋊C4—1421no—
409C2×C22⋊C4—21no—
410C2×C22⋊C4—1422no—
411C2×C22⋊C4—1421no—
412C2×C22⋊C4—1421no—
413C2×C42—712no—
414C2×C42—712no—
415C2×C42—711no—
416C2×C42—712no—
417C2×C42—711no—
418C2×C42—711no—
419C2×C42—711no—
420C2×C42—711no—
421C2×C42—711no—
422C2×C42—712no—
423C2×C42—1424no—
424C2×C42—1422no—
425C2×C42—1422no—
426C2×C42—1424no—
427C2×C42—1422no—
428C2×C42—1421no—
429C2×C42C22×D7112yes—
430#104—7116no—
431#104C2×Dic71116yescomplemented
432#97—1422no—
433#97—1422no—
434C4×C8—1422no—
435C4×C8—1422no—
436#95—1424no—
437C24—21no—
438C24D4×D7111yescharacteristic
439#41—22no—
440#41—22no—
441#41—24no—
442#41—24no—
443#41—24no—
444#41—24no—
445#41—24no—
446#41C4×Dic7118yescomplemented
447#41C2×C4×D7114yes—
448#41C22×Dic7114yes—
449C2×Q8—21no—
450C2×Q8—22no—
451C2×Q8C4×Dic7114yescomplemented
452C2×Q8C2×C4×D7112yes—
453C2×D4—22no—
454C2×D4—22no—
455C2×D4—24no—
456C2×D4—24no—
457C2×D4—21no—
458C2×D4—22no—
459C2×D4C4×Dic7114yescomplemented
460C2×D4C2×C4×D7112yes—
461C22×C4—21no—
462C22×C4—22no—
463C22×C4—22no—
464C22×C4—24no—
465C22×C4—24no—
466C22×C4—22no—
467C22×C4—2848no—
468C22×C4—2844no—
469C22×C4—712no—
470C22×C4—712no—
471C22×C4—712no—
472C22×C4—712no—
473C22×C4—712no—
474C22×C4—712no—
475C22×C4—1424no—
476C22×C4—1424no—
477C22×C4—1422no—
478C22×C4—1422no—
479C22×C4C2×C4×D7111yescharacteristic
480C22×C4C2×C4×D7111yescharacteristic
481C22×C4C2×C4×D7112yes—
482C22×C4C22×Dic7112yes—
483C22×C4D4×D7111yescharacteristic
484C22×C4D4×D7111yescharacteristic
485C22×C4D4×D7111yescharacteristic
486C22×C4#1176586412yes—
487C22×C4#1176586412yes—
488C22×C4C23×D7111yescharacteristic
489M16—22no—
490M16—24no—
491M16—714no—
492M16—1422no—
493M16—1424no—
494M16C22×Dic7114yescomplemented
495C2×C8—22no—
496C2×C8—24no—
497C2×C8—1422no—
498C2×C8—1424no—
499C4⋊C4—24no—
500C4⋊C4—714no—
501C4⋊C4—1424no—
502C4⋊C4—1424no—
503C4⋊C4—1422no—
504C4⋊C4—1424no—
505C22⋊C4—24no—
506C22⋊C4—1424no—
507C22⋊C4—1424no—
508C22⋊C4—1422no—
509C22⋊C4—1422no—
510C22⋊C4—1424no—
511C42—22no—
512C42—2848no—
513C42—712no—
514C42—712no—
515C42—711no—
516C42—711no—
517C42—711no—
518C42—711no—
519C42—712no—
520C42—712no—
521C42—712no—
522C42—712no—
523C42—714no—
524C42—1424no—
525C42—1424no—
526C42—1422no—
527C42—1422no—
528C42—1422no—
529C42C22×Dic7114yescomplemented
530C23—24no—
531C23—22no—
532C23—42no—
533C23—44no—
534C23C22⋊C4×D7111yescharacteristic
535C23C22⋊C4×D7111yescharacteristic
536C23(C22⋊D71)⋊C412yes—
537C23D4×Dic7112yes—
538C23C2×D4×D7111yescharacteristic
539Q8—24no—
540Q8—22no—
541Q8C2×C4×Dic7114yes—
542D4—28no—
543D4—24no—
544D4—24no—
545D4—24no—
546D4—22no—
547D4C2×C4×Dic7114yes—
548C2×C4—24no—
549C2×C4—22no—
550C2×C4—28no—
551C2×C4—24no—
552C2×C4—24no—
553C2×C4—24no—
554C2×C4—44no—
555C2×C4—2844no—
556C2×C4—2844no—
557C2×C4—2848no—
558C2×C4—2848no—
559C2×C4—2842no—
560C2×C4—2842no—
561C2×C4—2842no—
562C2×C4—712no—
563C2×C4—712no—
564C2×C4—712no—
565C2×C4—712no—
566C2×C4—1424no—
567C2×C4—1424no—
568C2×C4—1424no—
569C2×C4—1424no—
570C2×C4—1424no—
571C2×C4C2×C4×Dic7112yes—
572C2×C4C2×C4×Dic7112yes—
573C2×C4C22⋊C4×D7111yescharacteristic
574C2×C4C22⋊C4×D7111yescharacteristic
575C2×C4#1455608412yes—
576C2×C4#1455608412yes—
577C2×C4(C22⋊D71)⋊C412yes—
578C2×C4(C22⋊D71)⋊C412yes—
579C2×C4(C22⋊D71)⋊C412yes—
580C2×C4D4×Dic7112yes—
581C2×C4D4×Dic7112yes—
582C2×C4D4×Dic7112yes—
583C2×C4C22×C4×D7111yescharacteristic
584C2×C4C22×C4×D7111yescharacteristic
585C2×C4C23×Dic7111yescharacteristic
586C2×C4C2×D4×D7111yescharacteristic
587C2×C4C2×#1176586411yescharacteristic
588C2×C4C2×#1176586411yescharacteristic
589C8—24no—
590C8—1424no—
591C22—22no—
592C22—22no—
593C22—22no—
594C22—24no—
595C22—42no—
596C22—42no—
597C22—48no—
598C22—44no—
599C22C22⋊C4×Dic7112yes—
600C22C22⋊C4×Dic7112yes—
601C22C2×C22⋊C4×D7111yescharacteristic
602C22C2×(C22⋊D71)⋊C411yescharacteristic
603C22C2×D4×Dic7111yescharacteristic
604C4—24no—
605C4—44no—
606C4—2844no—
607C4—2844no—
608C4—714no—
609C4—1422no—
610C4—1422no—
611C4—1422no—
612C4C22⋊C4×Dic7112yes—
613C4C22⋊C4×Dic7112yes—
614C4C22×C4×Dic7111yescharacteristic
615C4C2×#1455608411yescharacteristic
616C4C2×(C22⋊D71)⋊C411yescharacteristic
617C4C2×D4×Dic7111yescharacteristic
618C2—21no—
619C2—21no—
620C2—22no—
621C2—22no—
622C2—44no—
623C2C2×C22⋊C4×Dic7111yescharacteristic
624C2#421×D7112yes—
subgroupG/H
centerC2×C4C2×D4×D71
commutatorC4×C71C22×C42
FrattiniC22×C4C23×D71
FittingC2×#421×C71C2
socleC22×C71C22×C22⋊C4
prime radicalC22×#41×C71C22
cosocleC22×C4×C71C24
hypercenterC2×#421D71
hypocenterC71C4×#421
LCSG ▷ C4×C71 ▷ C2×C71 ▷ C71
UCSC1 ◁ C2×C4 ◁ C23×C4 ◁ C2×#421

Complements

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

NH ≅ G/Ntype
3. C2×M16×Dic71C2semidirect
4. #117×Dic71C2semidirect
5. #22588152C2semidirect
6. #104×Dic71C2semidirect
7. #22588051C2semidirect
8. #22588050C2semidirect
14. #41×Dic71C4semidirect
17. C2×Q8×Dic71C4semidirect
19. C2×D4×Dic71C4semidirect
25. #17986016C4semidirect
29. M16×Dic71C22semidirect
30. M16×Dic71C22semidirect
35. #17985845C22semidirect
36. C42×Dic71C22semidirect
37. #17985760C22semidirect
38. #17985759C22semidirect
42. #421×C71C4semidirect
48. C2×#11765849C2×C4semidirect
70. #14556087C2×C4semidirect
94. #14556055C2×C4semidirect
115. C2×M16×C71C2×C4semidirect
119. #117×C71C2×C4semidirect
123. #104×C71C2×C4semidirect
138. #11765849C22×C4semidirect
163. C4×Dic71C22×C4semidirect
177. #41×C71C42semidirect
182. C2×Q8×C71C42semidirect
190. C2×D4×C71C42semidirect
210. M16×C71C22×C4semidirect
216. C42×C71C22×C4semidirect
304. Dic71#421direct (N × H)
322. C71C4×#421semidirect
342. #421Dic71direct (N × H)
378. C2×M16C2×Dic71semidirect
404. #117C2×Dic71semidirect
431. #104C2×Dic71semidirect
446. #41C4×Dic71semidirect
451. C2×Q8C4×Dic71semidirect
459. C2×D4C4×Dic71semidirect
494. M16C22×Dic71semidirect
529. C42C22×Dic71semidirect

Maximal subgroups

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

subgroupindex
C2×#41×Dic712
C2×#179860162
C2×M16×Dic712
#117×Dic712
#225881522
#104×Dic712
#225880512
#225880502
C2×#421×C712
C4×#42171