Finite Group Databasebeta

← #27355603

Subgroups — #27355603

Order 13568.

786 conjugacy classes of subgroups.

The subgroup lattice has 658 nodes — too large to display as a diagram.

Conjugacy classes of subgroups

#subgroupG/Hclass sizemultiplicitynormal?properties
1C4×D8×D53C211yesmaximal, characteristic
2#20283451C211yesmaximal, characteristic, complemented
3D4×#11719912C211yesmaximal, characteristic, complemented
4#20273627C211yesmaximal, characteristic, complemented
5#20273626C211yesmaximal, characteristic, complemented
6#20273581C211yesmaximal, characteristic, complemented
7#20273580C211yesmaximal, characteristic, complemented
8#20273578C211yesmaximal, characteristic, complemented
9#20273537C211yesmaximal, characteristic, complemented
10#20273536C211yesmaximal, characteristic, complemented
11#20273469C211yesmaximal, characteristic, complemented
12#20273138C211yesmaximal, characteristic, complemented
13#20273138C211yesmaximal, characteristic, complemented
14#20273003C211yesmaximal, characteristic, complemented
15C53×#1586C211yesmaximal, characteristic, complemented
16C2×D8×D53C411yescharacteristic
17C22×#11719912—21no—
18C2×M16×D53—21no—
19C4×D4×D53C2211yescharacteristic
20C4×D4×D53C2211yescharacteristic
21C4×D424C2211yescharacteristic
22D8×Dic53C411yescharacteristic
23#16810705C411yescharacteristic
24C4×#11719922C2211yescharacteristic
25C4×#11719922C2211yescharacteristic
26#16810703C411yescharacteristic
27#16810703C411yescharacteristic
28#16810702C2211yescharacteristic, complemented
29#16810701C2211yescharacteristic, complemented
30#16810700C2211yescharacteristic, complemented
31#16810697—21no—
32#16810694—21no—
33#16810692—21no—
34#16810691—21no—
35C8×D212C2211yescharacteristic, complemented
36D4×#88322C2211yescharacteristic, complemented
37#16810688C2211yescharacteristic, complemented
38#16810674C2211yescharacteristic
39#107×D53C411yescharacteristic
40#16810645C2211yescharacteristic
41#16810645C2211yescharacteristic
42#102×D53C411yescharacteristic
43#102×D53C411yescharacteristic
44#16810585—21no—
45#16810585—21no—
46C4×#11719912C2211yescharacteristic
47C4×C8×D53C2211yescharacteristic
48#16810374C2211yescharacteristic, complemented
49#16810373C2211yescharacteristic, complemented
50#16810373C2211yescharacteristic, complemented
51#16810352C2211yescharacteristic, complemented
52#16810352C2211yescharacteristic, complemented
53D4⋊#88322C2211yescharacteristic, complemented
54D4⋊#88322C2211yescharacteristic, complemented
55#16810350C2211yescharacteristic, complemented
56#16810350C2211yescharacteristic, complemented
57#16810345C2211yescharacteristic, complemented
58#16810345C2211yescharacteristic, complemented
59#16810345C2211yescharacteristic, complemented
60C4×D8×C53C2211yescharacteristic
61C53×#436C2211yescharacteristic, complemented
62C8×D4×C53C2211yescharacteristic, complemented
63C53×#334C2211yescharacteristic, complemented
64C53×D4⋊C8C2211yescharacteristic, complemented
65C53×D4⋊C8C2211yescharacteristic, complemented
66C53×#322C2211yescharacteristic, complemented
67C2×D4×D53C2×C411yescharacteristic
68C2×D4×D53C2×C411yescharacteristic
69C22×C4×D53—21no—
70C22×C4×D53—21no—
71C2×D424C2×C411yescharacteristic
72C2×#11719922C2×C411yescharacteristic
73C2×#11719922C2×C411yescharacteristic
74D8×D53—24no—
75C2×#11719917—21no—
76C2×#11719912—21no—
77C2×#11719912—21no—
78C2×#11719912—21no—
79C2×#11719912—21no—
80C2×#11719912—44no—
81C2×#11719912D411yescharacteristic
82C2×#11719912D411yescharacteristic
83M16×D53—44no—
84C22×#88322—21no—
85C2×C8×D53—21no—
86C2×C8×D53—21no—
87C2×C8×D53C2×C411yescharacteristic
88C2×C8×D53C2×C411yescharacteristic
89C4×D212C2311yescharacteristic
90C4×D212C2311yescharacteristic
91D4×Dic53C2×C411yescharacteristic
92D4×Dic53C2×C411yescharacteristic
93#13133179C2×C411yescharacteristic
94#13133179C2×C411yescharacteristic
95C4×C22⋊D53—21no—
96C4×C22⋊D53—21no—
97#13133177—21no—
98#13133177—21no—
99C4⋊C4×D53C2×C411yescharacteristic
100C4⋊C4×D53C2×C411yescharacteristic
101C22⋊C4×D53—21no—
102C22⋊C4×D53—21no—
103C42×D53C2311yescharacteristic
104#13133151C2×C411yescharacteristic
105#13133150C2×C411yescharacteristic
106#13133150C2×C411yescharacteristic
107C4⋊#88322C2311yescharacteristic
108C4⋊#88322C2311yescharacteristic
109#13133146—21no—
110#13133146—21no—
111#13133146—21no—
112#13133139C2×C411yescharacteristic
113#13133139C2×C411yescharacteristic
114#13133138C2×C411yescharacteristic
115#13133138C2×C411yescharacteristic
116#13133137C2×C411yescharacteristic
117#13133137C2×C411yescharacteristic
118C22⋊#88322—21no—
119C22⋊#88322—21no—
120#13133129—21no—
121#13133129—21no—
122#13133129—21no—
123#13133129—21no—
124#13133129—21no—
125#13133127D411yescharacteristic
126#13133127D411yescharacteristic
127C4×#88322C2311yescharacteristic
128C4×#88322C2311yescharacteristic
129C4×#88322C2311yescharacteristic
130C8×Dic53C2×C411yescharacteristic
131C8×Dic53C2×C411yescharacteristic
132C2×D8×C53C2×C411yescharacteristic
133C2×M16×C53—21no—
134C22×C8×C53—21no—
135C4×D4×C53C2311yescharacteristic
136C4×D4×C53C2311yescharacteristic
137#107×C53C2×C411yescharacteristic
138C4⋊C8×C53C2311yescharacteristic
139C4⋊C8×C53C2311yescharacteristic
140#102×C53C2×C411yescharacteristic
141#102×C53C2×C411yescharacteristic
142C22⋊C8×C53—21no—
143C22⋊C8×C53—21no—
144C4×C8×C53C2311yescharacteristic
145C4×C8×C53C2311yescharacteristic
146C4×C8×C53C2311yescharacteristic
147C23×D53—21no—
148C23×D53—21no—
149C2×D4×C53C22×C411yescharacteristic
150C2×D4×C53C22×C411yescharacteristic
151C22×C4×C53—21no—
152C22×C4×C53—21no—
153C2×C22⋊D53—21no—
154C2×C22⋊D53—21no—
155C22×Dic53—21no—
156C22×Dic53—21no—
157D4×D53—22no—
158D4×D53—22no—
159D4×D53—41no—
160D4×D53—41no—
161C2×D212C22×C411yescharacteristic
162C2×D212C22×C411yescharacteristic
163C2×C4×D53—21no—
164C2×C4×D53—21no—
165C2×C4×D53—21no—
166C2×C4×D53—21no—
167C2×C4×D53—21no—
168C2×C4×D53—21no—
169C2×C4×D53—42no—
170C2×C4×D53—42no—
171C2×C4×D53—42no—
172C2×C4×D53—42no—
173C2×C4×D53C22×C411yescharacteristic
174C2×C4×D53C2×D411yescharacteristic
175C2×C4×D53#4111yescharacteristic
176D8×C53—22no—
177M16×C53—42no—
178C2×C8×C53—21no—
179C2×C8×C53—21no—
180C2×C8×C53—21no—
181C2×C8×C53—42no—
182C2×C8×C53C22×C411yescharacteristic
183C2×C8×C53C22×C411yescharacteristic
184C2×C8×C53C2×D411yescharacteristic
185C2×C8×C53C2×D411yescharacteristic
186C4⋊C4×C53C22×C411yescharacteristic
187C4⋊C4×C53C22×C411yescharacteristic
188C22⋊C4×C53—21no—
189C22⋊C4×C53—21no—
190C42×C53C2411yescharacteristic
191C22⋊Dic53—21no—
192C22⋊Dic53—21no—
193#11719922—22no—
194#11719922M1614yescomplemented
195#11719921—21no—
196#11719921—21no—
197#11719921—21no—
198#11719921—21no—
199C4⋊Dic53C22×C411yescharacteristic
200C4⋊Dic53C22×C411yescharacteristic
201#11719919—21no—
202#11719919—21no—
203C4×Dic53C22×C411yescharacteristic
204C4×Dic53C2×D411yescharacteristic
205C4×Dic53#4111yescharacteristic
206#11719917—42no—
207C2×#88322—21no—
208C2×#88322—21no—
209C2×#88322—21no—
210C2×#88322—42no—
211C2×#88322C22×C411yescharacteristic
212C2×#88322C22×C411yescharacteristic
213C2×#88322C2×D411yescharacteristic
214C2×#88322C2×D411yescharacteristic
215D424—22no—
216#11719912—22no—
217#11719912—22no—
218#11719912—42no—
219#11719912—42no—
220#11719912—42no—
221#11719912—42no—
222C8×D53—22no—
223C8×D53—41no—
224C8×D53—42no—
225C8×D53—42no—
226C23×C53—21no—
227C23×C53—21no—
228C22×D53—21no—
229C22×D53—21no—
230C22×D53—42no—
231C22×D53—42no—
232C22×D53—42no—
233C22×D53—42no—
234C22×D53—81no—
235C22×D53—81no—
236C22×D53C4×D411yescharacteristic
237D4×C53—21no—
238D4×C53—21no—
239D4×C53—21no—
240D4×C53C2×M1612yescomplemented
241C2×C4×C53—21no—
242C2×C4×C53—21no—
243C2×C4×C53—41no—
244C2×C4×C53—41no—
245C2×C4×C53—41no—
246C2×C4×C53—41no—
247C2×C4×C53C23×C411yescharacteristic
248C2×C4×C53C22×D411yescharacteristic
249C2×C4×C53C2×#4111yescharacteristic
250C22⋊D53—42no—
251C22⋊D53—42no—
252C2×Dic53—21no—
253C2×Dic53—21no—
254C2×Dic53—42no—
255C2×Dic53—42no—
256C2×Dic53C4×D411yescharacteristic
257C2×Dic53C4×D411yescharacteristic
258C2×Dic53C4×D411yescharacteristic
259D212—21no—
260D212—21no—
261D212—21no—
262D212C2×M1612yescomplemented
263C4×D53—21no—
264C4×D53—21no—
265C4×D53—41no—
266C4×D53—42no—
267C4×D53—42no—
268C4×D53—41no—
269C4×D53—41no—
270C4×D53—41no—
271C4×D53—41no—
272C4×D53—42no—
273C4×D53—42no—
274C4×D53AGL(1,ℤ/8)12yes—
275C4×D53AGL(1,ℤ/8)12yes—
276C8×C53—21no—
277C8×C53—21no—
278C8×C53—21no—
279C8×C53—21no—
280C8×C53—41no—
281C8×C53—41no—
282C8×C53—41no—
283#88322—21no—
284#88322—21no—
285#88322—21no—
286#88322—41no—
287#88322—41no—
288#88322—41no—
289#88322C2×M1612yescomplemented
290#18044—531nomaximal, Sylow
291C22×C53—22no—
292C22×C53—41no—
293C22×C53—41no—
294C22×C53—41no—
295C22×C53—41no—
296C22×C53—41no—
297C22×C53C2×C4×D411yescharacteristic
298C2×D53—21no—
299C2×D53—21no—
300C2×D53—22no—
301C2×D53—41no—
302C2×D53—41no—
303C2×D53—41no—
304C2×D53—41no—
305C2×D53—41no—
306C2×D53—84no—
307C2×D53—84no—
308C2×D53#44212yes—
309C4×C53—21no—
310C4×C53—41no—
311C4×C53—41no—
312C4×C53C22×M1611yescharacteristic
313C4×C53#56811yescharacteristic
314C4×C53C2×AGL(1,ℤ/8)11yescharacteristic
315C4×C53C2×AGL(1,ℤ/8)11yescharacteristic
316Dic53—21no—
317Dic53—21no—
318Dic53—41no—
319Dic53—41no—
320Dic53#44212yes—
321C2×C4×D8—531no—
322D4×M16—531no—
323D4×M16—531no—
324#1594—531no—
325#1594—531no—
326#1586—531no—
327#1586—531no—
328#1586—531no—
329#1586D5311yescharacteristic, complemented
330#1580—531no—
331#1580—531no—
332#1566—531no—
333#1486—531no—
334#1486—531no—
335#1451—531no—
336C2×C53—42no—
337C2×C53—81no—
338C2×C53D4×M1611yescharacteristic
339C2×C53C2×#44211yescharacteristic
340C2×C53#295711yescharacteristic
341D53—22no—
342D53—42no—
343D53—81no—
344C22×D8—531no—
345C22×M16—1061no—
346C22×M16—1061no—
347C2×C4×D4—531no—
348C2×C4×D4—531no—
349C4×D8—531no—
350C4×D8—531no—
351C4×D8—531no—
352C4×D8—531no—
353C4×D8—531no—
354C4×D8—531no—
355C4×D8—531no—
356C4×D8C2×D5311yescharacteristic
357#436—531no—
358#436—531no—
359#436—531no—
360#436C2×D5311yescharacteristic, complemented
361#435—1061no—
362#435—1061no—
363#435—1061no—
364#435—1061no—
365C8×D4—531no—
366C8×D4—531no—
367C8×D4—531no—
368C8×D4C2×D5311yescharacteristic, complemented
369#431—531no—
370C2×#107—531no—
371#423—531no—
372#423—531no—
373C2×#102—531no—
374C2×#102—531no—
375#407—1061no—
376#407—1061no—
377C4×M16—531no—
378C2×C4×C8—531no—
379#334—531no—
380#334—531no—
381#334—531no—
382#334C2×D5311yescharacteristic, complemented
383D4⋊C8—531no—
384D4⋊C8—531no—
385D4⋊C8—531no—
386D4⋊C8—531no—
387D4⋊C8—531no—
388D4⋊C8—531no—
389D4⋊C8C2×D5311yescharacteristic, complemented
390D4⋊C8C2×D5311yescharacteristic, complemented
391#322—531no—
392#322—531no—
393#322—531no—
394#322C2×D5311yescharacteristic, complemented
395C53#1804411yescharacteristic, complemented, Sylow
396C22×D4—531no—
397C22×D4—531no—
398C23×C4—1061no—
399C23×C4—1061no—
400C2×D8—531no—
401C2×D8—531no—
402C2×D8—531no—
403C2×D8—1064no—
404C2×D8C4×D5311yescharacteristic
405C2×M16—21no—
406C2×M16—531no—
407C2×M16—531no—
408C2×M16—1061no—
409C2×M16—1061no—
410C2×M16—1061no—
411C2×M16—1061no—
412C2×M16—1061no—
413C2×M16—2124no—
414C2×M16—2124no—
415C22×C8—21no—
416C22×C8—531no—
417C22×C8—531no—
418C22×C8—1061no—
419C22×C8—1061no—
420C22×C8—1061no—
421C4×D4—531no—
422C4×D4—531no—
423C4×D4—531no—
424C4×D4—531no—
425C4×D4—531no—
426C4×D4—531no—
427C4×D4—1061no—
428C4×D4—1061no—
429C4×D4—1061no—
430C4×D4—1061no—
431C4×D4C22×D5311yescharacteristic
432C4×D4C22×D5311yescharacteristic
433C2×C4⋊C4—531no—
434C2×C4⋊C4—531no—
435C2×C22⋊C4—1061no—
436C2×C22⋊C4—1061no—
437C2×C42—531no—
438#107—531no—
439#107—531no—
440#107—531no—
441#107C4×D5311yescharacteristic
442C4⋊C8—531no—
443C4⋊C8—531no—
444C4⋊C8—1061no—
445C4⋊C8—1061no—
446C4⋊C8—1061no—
447C4⋊C8C22×D5311yescharacteristic
448C4⋊C8C22×D5311yescharacteristic
449#102—531no—
450#102—531no—
451#102—531no—
452#102—531no—
453#102—531no—
454#102—531no—
455#102C4×D5311yescharacteristic
456#102C4×D5311yescharacteristic
457C22⋊C8—21no—
458C22⋊C8—21no—
459C22⋊C8—1061no—
460C22⋊C8—1061no—
461C22⋊C8—1061no—
462C22⋊C8—1061no—
463C22⋊C8—1061no—
464C22⋊C8—1061no—
465C22⋊C8—1061no—
466#97—531no—
467#97—531no—
468C4×C8—531no—
469C4×C8—531no—
470C4×C8—531no—
471C4×C8—531no—
472C4×C8—531no—
473C4×C8C22×D5311yescharacteristic
474C4×C8C22×D5311yescharacteristic
475C4×C8C22×D5311yescharacteristic
476C24—1061no—
477C24—1061no—
478C2×D4—531no—
479C2×D4—531no—
480C2×D4—1061no—
481C2×D4—1061no—
482C2×D4—1062no—
483C2×D4—1062no—
484C2×D4—2121no—
485C2×D4—2121no—
486C2×D4C2×C4×D5311yescharacteristic
487C2×D4C2×C4×D5311yescharacteristic
488C22×C4—21no—
489C22×C4—21no—
490C22×C4—531no—
491C22×C4—531no—
492C22×C4—531no—
493C22×C4—1061no—
494C22×C4—1061no—
495C22×C4—1061no—
496C22×C4—1061no—
497C22×C4—1061no—
498C22×C4—1061no—
499C22×C4—1061no—
500C22×C4—1061no—
501C22×C4—2122no—
502C22×C4—2122no—
503C22×C4—2122no—
504C22×C4—2122no—
505D8—22no—
506D8—534no—
507D8—1062no—
508D8—1062no—
509M16—42no—
510M16—1062no—
511M16—1062no—
512M16—2122no—
513M16—2122no—
514M16—2122no—
515M16—2122no—
516M16—2122no—
517C2×C8—21no—
518C2×C8—21no—
519C2×C8—21no—
520C2×C8—42no—
521C2×C8—531no—
522C2×C8—531no—
523C2×C8—531no—
524C2×C8—531no—
525C2×C8—1062no—
526C2×C8—1061no—
527C2×C8—1061no—
528C2×C8—1061no—
529C2×C8—2121no—
530C2×C8—2122no—
531C2×C8—2122no—
532C2×C8—2122no—
533C2×C8C2×C4×D5311yescharacteristic
534C2×C8C2×C4×D5311yescharacteristic
535C2×C8D4×D5311yescharacteristic
536C2×C8D4×D5311yescharacteristic
537C4⋊C4—531no—
538C4⋊C4—531no—
539C4⋊C4—1061no—
540C4⋊C4—1061no—
541C4⋊C4C2×C4×D5311yescharacteristic
542C4⋊C4C2×C4×D5311yescharacteristic
543C22⋊C4—21no—
544C22⋊C4—21no—
545C22⋊C4—1061no—
546C22⋊C4—1061no—
547C22⋊C4—1061no—
548C22⋊C4—1061no—
549C22⋊C4—1061no—
550C22⋊C4—1061no—
551C42—531no—
552C42—531no—
553C42—531no—
554C42C23×D5311yescharacteristic
555C23—21no—
556C23—21no—
557C23—531no—
558C23—1061no—
559C23—1061no—
560C23—4241no—
561C23—4241no—
562C23—2122no—
563C23—2122no—
564C23—2122no—
565C23—2122no—
566D4—21no—
567D4—21no—
568D4—21no—
569D4—532no—
570D4—1061no—
571D4—1061no—
572D4—1061no—
573D4—2122no—
574D4—2122no—
575D4M16×D5312yescomplemented
576C2×C4—21no—
577C2×C4—21no—
578C2×C4—41no—
579C2×C4—41no—
580C2×C4—41no—
581C2×C4—41no—
582C2×C4—531no—
583C2×C4—532no—
584C2×C4—532no—
585C2×C4—531no—
586C2×C4—531no—
587C2×C4—1061no—
588C2×C4—1061no—
589C2×C4—1061no—
590C2×C4—1061no—
591C2×C4—2121no—
592C2×C4—2122no—
593C2×C4—2122no—
594C2×C4—2122no—
595C2×C4—2122no—
596C2×C4—2122no—
597C2×C4—2122no—
598C2×C4—2121no—
599C2×C4—2121no—
600C2×C4—2121no—
601C2×C4—2121no—
602C2×C4C22×C4×D5311yescharacteristic
603C2×C4C2×D4×D5311yescharacteristic
604C2×C4#41×D5311yescharacteristic
605C8—21no—
606C8—21no—
607C8—21no—
608C8—21no—
609C8—41no—
610C8—41no—
611C8—41no—
612C8—532no—
613C8—1061no—
614C8—1061no—
615C8—1061no—
616C8—2121no—
617C8—2121no—
618C8—2121no—
619C22—22no—
620C22—41no—
621C22—41no—
622C22—41no—
623C22—41no—
624C22—41no—
625C22—532no—
626C22—1061no—
627C22—1061no—
628C22—1062no—
629C22—4244no—
630C22—4244no—
631C22—2121no—
632C22—2121no—
633C22—2121no—
634C22—2121no—
635C22—2121no—
636C22C4×D4×D5311yescharacteristic
637C4—21no—
638C4—41no—
639C4—41no—
640C4—532no—
641C4—1061no—
642C4—1061no—
643C4—2121no—
644C4—2121no—
645C4C2×M16×D5311yescharacteristic
646C4#1681138811yescharacteristic
647C4AGL(1,ℤ/8)×D5311yescharacteristic
648C4AGL(1,ℤ/8)×D5311yescharacteristic
649C2—42no—
650C2—81no—
651C2—1062no—
652C2—4241no—
653C2—2122no—
654C2#2028344811yescharacteristic
655C2#442×D5311yescharacteristic
656C2#2028362711yescharacteristic
subgroupG/H
centerC2×C4C2×D4×D53
commutatorC2×C4×C53C23×C4
FrattiniC42C23×D53
FittingC53×#1586C2
socleC22×C53C2×C4×D4
prime radicalC2×D8×D53C4
cosocleC42×C53C24
hypercenter#1586D53
hypocenterC53#18044
LCSG ▷ C2×C4×C53 ▷ C2×C53 ▷ C53
UCSC1 ◁ C2×C4 ◁ C4×C8 ◁ #1586

Complements

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

NH ≅ G/Ntype
2. #20283451C2semidirect
3. D4×#11719912C2semidirect
4. #20273627C2semidirect
5. #20273626C2semidirect
6. #20273581C2semidirect
7. #20273580C2semidirect
8. #20273578C2semidirect
9. #20273537C2semidirect
10. #20273536C2semidirect
11. #20273469C2semidirect
12. #20273138C2semidirect
13. #20273138C2semidirect
14. #20273003C2semidirect
15. C53×#1586C2semidirect
28. #16810702C22semidirect
29. #16810701C22semidirect
30. #16810700C22semidirect
35. C8×D212C22semidirect
36. D4×#88322C22semidirect
37. #16810688C22semidirect
48. #16810374C22semidirect
49. #16810373C22semidirect
50. #16810373C22semidirect
51. #16810352C22semidirect
52. #16810352C22semidirect
53. D4⋊#88322C22semidirect
54. D4⋊#88322C22semidirect
55. #16810350C22semidirect
56. #16810350C22semidirect
57. #16810345C22semidirect
58. #16810345C22semidirect
59. #16810345C22semidirect
61. C53×#436C22semidirect
62. C8×D4×C53C22semidirect
63. C53×#334C22semidirect
64. C53×D4⋊C8C22semidirect
65. C53×D4⋊C8C22semidirect
66. C53×#322C22semidirect
194. #11719922M16semidirect
240. D4×C53C2×M16semidirect
262. D212C2×M16semidirect
289. #88322C2×M16semidirect
329. #1586D53semidirect
360. #436C2×D53semidirect
368. C8×D4C2×D53semidirect
382. #334C2×D53semidirect
389. D4⋊C8C2×D53semidirect
390. D4⋊C8C2×D53semidirect
394. #322C2×D53semidirect
395. C53#18044semidirect
575. D4M16×D53semidirect

Maximal subgroups

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

subgroupindex
C4×D8×D532
#202834512
D4×#117199122
#202736272
#202736262
#202735812
#202735802
#202735782
#202735372
#202735362
#202734692
#202731382
#202730032
C53×#15862
#1804453