Polytope of Type {8,20}

This page is part of the Atlas of Small Regular Polytopes
Atlas Canonical Name : {8,20}*1280c
if this polytope has a name.
Group : SmallGroup(1280,90301)
Rank : 3
Schlafli Type : {8,20}
Number of vertices, edges, etc : 32, 320, 80
Order of s₀s₁s₂ : 40
Order of s₀s₁s₂s₁ : 8
Special Properties :
   Compact Hyperbolic Quotient
   Locally Spherical
   Orientable
Related Polytopes :
   Facet
   Vertex Figure
   Dual
Facet Of :
   None in this Atlas
Vertex Figure Of :
   None in this Atlas
Quotients (Maximal Quotients in Boldface) :
   2-fold quotients : {4,20}*640a
   4-fold quotients : {4,20}*320
   5-fold quotients : {8,4}*256c
   8-fold quotients : {4,20}*160
   10-fold quotients : {4,4}*128
   16-fold quotients : {2,20}*80, {4,10}*80
   20-fold quotients : {4,4}*64
   32-fold quotients : {2,10}*40
   40-fold quotients : {4,4}*32
   64-fold quotients : {2,5}*20
   80-fold quotients : {2,4}*16, {4,2}*16
   160-fold quotients : {2,2}*8
Covers (Minimal Covers in Boldface) :
   None in this atlas.
Permutation Representation (GAP) :

s0 := (  1,321)(  2,322)(  3,323)(  4,324)(  5,325)(  6,326)(  7,327)(  8,328)
(  9,329)( 10,330)( 11,336)( 12,337)( 13,338)( 14,339)( 15,340)( 16,331)
( 17,332)( 18,333)( 19,334)( 20,335)( 21,341)( 22,342)( 23,343)( 24,344)
( 25,345)( 26,346)( 27,347)( 28,348)( 29,349)( 30,350)( 31,356)( 32,357)
( 33,358)( 34,359)( 35,360)( 36,351)( 37,352)( 38,353)( 39,354)( 40,355)
( 41,396)( 42,397)( 43,398)( 44,399)( 45,400)( 46,391)( 47,392)( 48,393)
( 49,394)( 50,395)( 51,381)( 52,382)( 53,383)( 54,384)( 55,385)( 56,386)
( 57,387)( 58,388)( 59,389)( 60,390)( 61,371)( 62,372)( 63,373)( 64,374)
( 65,375)( 66,376)( 67,377)( 68,378)( 69,379)( 70,380)( 71,366)( 72,367)
( 73,368)( 74,369)( 75,370)( 76,361)( 77,362)( 78,363)( 79,364)( 80,365)
( 81,406)( 82,407)( 83,408)( 84,409)( 85,410)( 86,401)( 87,402)( 88,403)
( 89,404)( 90,405)( 91,411)( 92,412)( 93,413)( 94,414)( 95,415)( 96,416)
( 97,417)( 98,418)( 99,419)(100,420)(101,426)(102,427)(103,428)(104,429)
(105,430)(106,421)(107,422)(108,423)(109,424)(110,425)(111,431)(112,432)
(113,433)(114,434)(115,435)(116,436)(117,437)(118,438)(119,439)(120,440)
(121,471)(122,472)(123,473)(124,474)(125,475)(126,476)(127,477)(128,478)
(129,479)(130,480)(131,466)(132,467)(133,468)(134,469)(135,470)(136,461)
(137,462)(138,463)(139,464)(140,465)(141,456)(142,457)(143,458)(144,459)
(145,460)(146,451)(147,452)(148,453)(149,454)(150,455)(151,441)(152,442)
(153,443)(154,444)(155,445)(156,446)(157,447)(158,448)(159,449)(160,450)
(161,481)(162,482)(163,483)(164,484)(165,485)(166,486)(167,487)(168,488)
(169,489)(170,490)(171,496)(172,497)(173,498)(174,499)(175,500)(176,491)
(177,492)(178,493)(179,494)(180,495)(181,501)(182,502)(183,503)(184,504)
(185,505)(186,506)(187,507)(188,508)(189,509)(190,510)(191,516)(192,517)
(193,518)(194,519)(195,520)(196,511)(197,512)(198,513)(199,514)(200,515)
(201,556)(202,557)(203,558)(204,559)(205,560)(206,551)(207,552)(208,553)
(209,554)(210,555)(211,541)(212,542)(213,543)(214,544)(215,545)(216,546)
(217,547)(218,548)(219,549)(220,550)(221,531)(222,532)(223,533)(224,534)
(225,535)(226,536)(227,537)(228,538)(229,539)(230,540)(231,526)(232,527)
(233,528)(234,529)(235,530)(236,521)(237,522)(238,523)(239,524)(240,525)
(241,566)(242,567)(243,568)(244,569)(245,570)(246,561)(247,562)(248,563)
(249,564)(250,565)(251,571)(252,572)(253,573)(254,574)(255,575)(256,576)
(257,577)(258,578)(259,579)(260,580)(261,586)(262,587)(263,588)(264,589)
(265,590)(266,581)(267,582)(268,583)(269,584)(270,585)(271,591)(272,592)
(273,593)(274,594)(275,595)(276,596)(277,597)(278,598)(279,599)(280,600)
(281,631)(282,632)(283,633)(284,634)(285,635)(286,636)(287,637)(288,638)
(289,639)(290,640)(291,626)(292,627)(293,628)(294,629)(295,630)(296,621)
(297,622)(298,623)(299,624)(300,625)(301,616)(302,617)(303,618)(304,619)
(305,620)(306,611)(307,612)(308,613)(309,614)(310,615)(311,601)(312,602)
(313,603)(314,604)(315,605)(316,606)(317,607)(318,608)(319,609)(320,610);;
s1 := (  2,  5)(  3,  4)(  7, 10)(  8,  9)( 12, 15)( 13, 14)( 17, 20)( 18, 19)
( 21, 31)( 22, 35)( 23, 34)( 24, 33)( 25, 32)( 26, 36)( 27, 40)( 28, 39)
( 29, 38)( 30, 37)( 42, 45)( 43, 44)( 47, 50)( 48, 49)( 52, 55)( 53, 54)
( 57, 60)( 58, 59)( 61, 71)( 62, 75)( 63, 74)( 64, 73)( 65, 72)( 66, 76)
( 67, 80)( 68, 79)( 69, 78)( 70, 77)( 81, 86)( 82, 90)( 83, 89)( 84, 88)
( 85, 87)( 91, 96)( 92,100)( 93, 99)( 94, 98)( 95, 97)(101,116)(102,120)
(103,119)(104,118)(105,117)(106,111)(107,115)(108,114)(109,113)(110,112)
(121,126)(122,130)(123,129)(124,128)(125,127)(131,136)(132,140)(133,139)
(134,138)(135,137)(141,156)(142,160)(143,159)(144,158)(145,157)(146,151)
(147,155)(148,154)(149,153)(150,152)(161,201)(162,205)(163,204)(164,203)
(165,202)(166,206)(167,210)(168,209)(169,208)(170,207)(171,211)(172,215)
(173,214)(174,213)(175,212)(176,216)(177,220)(178,219)(179,218)(180,217)
(181,231)(182,235)(183,234)(184,233)(185,232)(186,236)(187,240)(188,239)
(189,238)(190,237)(191,221)(192,225)(193,224)(194,223)(195,222)(196,226)
(197,230)(198,229)(199,228)(200,227)(241,291)(242,295)(243,294)(244,293)
(245,292)(246,296)(247,300)(248,299)(249,298)(250,297)(251,281)(252,285)
(253,284)(254,283)(255,282)(256,286)(257,290)(258,289)(259,288)(260,287)
(261,301)(262,305)(263,304)(264,303)(265,302)(266,306)(267,310)(268,309)
(269,308)(270,307)(271,311)(272,315)(273,314)(274,313)(275,312)(276,316)
(277,320)(278,319)(279,318)(280,317)(321,401)(322,405)(323,404)(324,403)
(325,402)(326,406)(327,410)(328,409)(329,408)(330,407)(331,411)(332,415)
(333,414)(334,413)(335,412)(336,416)(337,420)(338,419)(339,418)(340,417)
(341,431)(342,435)(343,434)(344,433)(345,432)(346,436)(347,440)(348,439)
(349,438)(350,437)(351,421)(352,425)(353,424)(354,423)(355,422)(356,426)
(357,430)(358,429)(359,428)(360,427)(361,441)(362,445)(363,444)(364,443)
(365,442)(366,446)(367,450)(368,449)(369,448)(370,447)(371,451)(372,455)
(373,454)(374,453)(375,452)(376,456)(377,460)(378,459)(379,458)(380,457)
(381,471)(382,475)(383,474)(384,473)(385,472)(386,476)(387,480)(388,479)
(389,478)(390,477)(391,461)(392,465)(393,464)(394,463)(395,462)(396,466)
(397,470)(398,469)(399,468)(400,467)(481,626)(482,630)(483,629)(484,628)
(485,627)(486,621)(487,625)(488,624)(489,623)(490,622)(491,636)(492,640)
(493,639)(494,638)(495,637)(496,631)(497,635)(498,634)(499,633)(500,632)
(501,611)(502,615)(503,614)(504,613)(505,612)(506,616)(507,620)(508,619)
(509,618)(510,617)(511,601)(512,605)(513,604)(514,603)(515,602)(516,606)
(517,610)(518,609)(519,608)(520,607)(521,581)(522,585)(523,584)(524,583)
(525,582)(526,586)(527,590)(528,589)(529,588)(530,587)(531,591)(532,595)
(533,594)(534,593)(535,592)(536,596)(537,600)(538,599)(539,598)(540,597)
(541,576)(542,580)(543,579)(544,578)(545,577)(546,571)(547,575)(548,574)
(549,573)(550,572)(551,566)(552,570)(553,569)(554,568)(555,567)(556,561)
(557,565)(558,564)(559,563)(560,562);;
s2 := (  1,163)(  2,162)(  3,161)(  4,165)(  5,164)(  6,168)(  7,167)(  8,166)
(  9,170)( 10,169)( 11,178)( 12,177)( 13,176)( 14,180)( 15,179)( 16,173)
( 17,172)( 18,171)( 19,175)( 20,174)( 21,188)( 22,187)( 23,186)( 24,190)
( 25,189)( 26,183)( 27,182)( 28,181)( 29,185)( 30,184)( 31,193)( 32,192)
( 33,191)( 34,195)( 35,194)( 36,198)( 37,197)( 38,196)( 39,200)( 40,199)
( 41,203)( 42,202)( 43,201)( 44,205)( 45,204)( 46,208)( 47,207)( 48,206)
( 49,210)( 50,209)( 51,218)( 52,217)( 53,216)( 54,220)( 55,219)( 56,213)
( 57,212)( 58,211)( 59,215)( 60,214)( 61,228)( 62,227)( 63,226)( 64,230)
( 65,229)( 66,223)( 67,222)( 68,221)( 69,225)( 70,224)( 71,233)( 72,232)
( 73,231)( 74,235)( 75,234)( 76,238)( 77,237)( 78,236)( 79,240)( 80,239)
( 81,263)( 82,262)( 83,261)( 84,265)( 85,264)( 86,268)( 87,267)( 88,266)
( 89,270)( 90,269)( 91,278)( 92,277)( 93,276)( 94,280)( 95,279)( 96,273)
( 97,272)( 98,271)( 99,275)(100,274)(101,243)(102,242)(103,241)(104,245)
(105,244)(106,248)(107,247)(108,246)(109,250)(110,249)(111,258)(112,257)
(113,256)(114,260)(115,259)(116,253)(117,252)(118,251)(119,255)(120,254)
(121,308)(122,307)(123,306)(124,310)(125,309)(126,303)(127,302)(128,301)
(129,305)(130,304)(131,313)(132,312)(133,311)(134,315)(135,314)(136,318)
(137,317)(138,316)(139,320)(140,319)(141,288)(142,287)(143,286)(144,290)
(145,289)(146,283)(147,282)(148,281)(149,285)(150,284)(151,293)(152,292)
(153,291)(154,295)(155,294)(156,298)(157,297)(158,296)(159,300)(160,299)
(321,483)(322,482)(323,481)(324,485)(325,484)(326,488)(327,487)(328,486)
(329,490)(330,489)(331,498)(332,497)(333,496)(334,500)(335,499)(336,493)
(337,492)(338,491)(339,495)(340,494)(341,508)(342,507)(343,506)(344,510)
(345,509)(346,503)(347,502)(348,501)(349,505)(350,504)(351,513)(352,512)
(353,511)(354,515)(355,514)(356,518)(357,517)(358,516)(359,520)(360,519)
(361,523)(362,522)(363,521)(364,525)(365,524)(366,528)(367,527)(368,526)
(369,530)(370,529)(371,538)(372,537)(373,536)(374,540)(375,539)(376,533)
(377,532)(378,531)(379,535)(380,534)(381,548)(382,547)(383,546)(384,550)
(385,549)(386,543)(387,542)(388,541)(389,545)(390,544)(391,553)(392,552)
(393,551)(394,555)(395,554)(396,558)(397,557)(398,556)(399,560)(400,559)
(401,583)(402,582)(403,581)(404,585)(405,584)(406,588)(407,587)(408,586)
(409,590)(410,589)(411,598)(412,597)(413,596)(414,600)(415,599)(416,593)
(417,592)(418,591)(419,595)(420,594)(421,563)(422,562)(423,561)(424,565)
(425,564)(426,568)(427,567)(428,566)(429,570)(430,569)(431,578)(432,577)
(433,576)(434,580)(435,579)(436,573)(437,572)(438,571)(439,575)(440,574)
(441,628)(442,627)(443,626)(444,630)(445,629)(446,623)(447,622)(448,621)
(449,625)(450,624)(451,633)(452,632)(453,631)(454,635)(455,634)(456,638)
(457,637)(458,636)(459,640)(460,639)(461,608)(462,607)(463,606)(464,610)
(465,609)(466,603)(467,602)(468,601)(469,605)(470,604)(471,613)(472,612)
(473,611)(474,615)(475,614)(476,618)(477,617)(478,616)(479,620)(480,619);;
poly := Group([s0,s1,s2]);;

Finitely Presented Group Representation (GAP) :

F := FreeGroup("s0","s1","s2");;
s0 := F.1;;  s1 := F.2;;  s2 := F.3;;  
rels := [ s0*s0, s1*s1, s2*s2, s0*s2*s0*s2, s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1, 
s0*s1*s2*s1*s0*s1*s0*s1*s0*s1*s2*s1*s0*s1*s0*s1, 
s0*s1*s2*s1*s2*s1*s2*s1*s0*s1*s2*s1*s2*s1*s2*s1, 
s1*s0*s2*s1*s0*s1*s2*s1*s0*s1*s2*s1*s0*s1*s0*s2*s1*s0, 
s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2 ];;
poly := F / rels;;

Permutation Representation (Magma) :

s0 := Sym(640)!(  1,321)(  2,322)(  3,323)(  4,324)(  5,325)(  6,326)(  7,327)
(  8,328)(  9,329)( 10,330)( 11,336)( 12,337)( 13,338)( 14,339)( 15,340)
( 16,331)( 17,332)( 18,333)( 19,334)( 20,335)( 21,341)( 22,342)( 23,343)
( 24,344)( 25,345)( 26,346)( 27,347)( 28,348)( 29,349)( 30,350)( 31,356)
( 32,357)( 33,358)( 34,359)( 35,360)( 36,351)( 37,352)( 38,353)( 39,354)
( 40,355)( 41,396)( 42,397)( 43,398)( 44,399)( 45,400)( 46,391)( 47,392)
( 48,393)( 49,394)( 50,395)( 51,381)( 52,382)( 53,383)( 54,384)( 55,385)
( 56,386)( 57,387)( 58,388)( 59,389)( 60,390)( 61,371)( 62,372)( 63,373)
( 64,374)( 65,375)( 66,376)( 67,377)( 68,378)( 69,379)( 70,380)( 71,366)
( 72,367)( 73,368)( 74,369)( 75,370)( 76,361)( 77,362)( 78,363)( 79,364)
( 80,365)( 81,406)( 82,407)( 83,408)( 84,409)( 85,410)( 86,401)( 87,402)
( 88,403)( 89,404)( 90,405)( 91,411)( 92,412)( 93,413)( 94,414)( 95,415)
( 96,416)( 97,417)( 98,418)( 99,419)(100,420)(101,426)(102,427)(103,428)
(104,429)(105,430)(106,421)(107,422)(108,423)(109,424)(110,425)(111,431)
(112,432)(113,433)(114,434)(115,435)(116,436)(117,437)(118,438)(119,439)
(120,440)(121,471)(122,472)(123,473)(124,474)(125,475)(126,476)(127,477)
(128,478)(129,479)(130,480)(131,466)(132,467)(133,468)(134,469)(135,470)
(136,461)(137,462)(138,463)(139,464)(140,465)(141,456)(142,457)(143,458)
(144,459)(145,460)(146,451)(147,452)(148,453)(149,454)(150,455)(151,441)
(152,442)(153,443)(154,444)(155,445)(156,446)(157,447)(158,448)(159,449)
(160,450)(161,481)(162,482)(163,483)(164,484)(165,485)(166,486)(167,487)
(168,488)(169,489)(170,490)(171,496)(172,497)(173,498)(174,499)(175,500)
(176,491)(177,492)(178,493)(179,494)(180,495)(181,501)(182,502)(183,503)
(184,504)(185,505)(186,506)(187,507)(188,508)(189,509)(190,510)(191,516)
(192,517)(193,518)(194,519)(195,520)(196,511)(197,512)(198,513)(199,514)
(200,515)(201,556)(202,557)(203,558)(204,559)(205,560)(206,551)(207,552)
(208,553)(209,554)(210,555)(211,541)(212,542)(213,543)(214,544)(215,545)
(216,546)(217,547)(218,548)(219,549)(220,550)(221,531)(222,532)(223,533)
(224,534)(225,535)(226,536)(227,537)(228,538)(229,539)(230,540)(231,526)
(232,527)(233,528)(234,529)(235,530)(236,521)(237,522)(238,523)(239,524)
(240,525)(241,566)(242,567)(243,568)(244,569)(245,570)(246,561)(247,562)
(248,563)(249,564)(250,565)(251,571)(252,572)(253,573)(254,574)(255,575)
(256,576)(257,577)(258,578)(259,579)(260,580)(261,586)(262,587)(263,588)
(264,589)(265,590)(266,581)(267,582)(268,583)(269,584)(270,585)(271,591)
(272,592)(273,593)(274,594)(275,595)(276,596)(277,597)(278,598)(279,599)
(280,600)(281,631)(282,632)(283,633)(284,634)(285,635)(286,636)(287,637)
(288,638)(289,639)(290,640)(291,626)(292,627)(293,628)(294,629)(295,630)
(296,621)(297,622)(298,623)(299,624)(300,625)(301,616)(302,617)(303,618)
(304,619)(305,620)(306,611)(307,612)(308,613)(309,614)(310,615)(311,601)
(312,602)(313,603)(314,604)(315,605)(316,606)(317,607)(318,608)(319,609)
(320,610);
s1 := Sym(640)!(  2,  5)(  3,  4)(  7, 10)(  8,  9)( 12, 15)( 13, 14)( 17, 20)
( 18, 19)( 21, 31)( 22, 35)( 23, 34)( 24, 33)( 25, 32)( 26, 36)( 27, 40)
( 28, 39)( 29, 38)( 30, 37)( 42, 45)( 43, 44)( 47, 50)( 48, 49)( 52, 55)
( 53, 54)( 57, 60)( 58, 59)( 61, 71)( 62, 75)( 63, 74)( 64, 73)( 65, 72)
( 66, 76)( 67, 80)( 68, 79)( 69, 78)( 70, 77)( 81, 86)( 82, 90)( 83, 89)
( 84, 88)( 85, 87)( 91, 96)( 92,100)( 93, 99)( 94, 98)( 95, 97)(101,116)
(102,120)(103,119)(104,118)(105,117)(106,111)(107,115)(108,114)(109,113)
(110,112)(121,126)(122,130)(123,129)(124,128)(125,127)(131,136)(132,140)
(133,139)(134,138)(135,137)(141,156)(142,160)(143,159)(144,158)(145,157)
(146,151)(147,155)(148,154)(149,153)(150,152)(161,201)(162,205)(163,204)
(164,203)(165,202)(166,206)(167,210)(168,209)(169,208)(170,207)(171,211)
(172,215)(173,214)(174,213)(175,212)(176,216)(177,220)(178,219)(179,218)
(180,217)(181,231)(182,235)(183,234)(184,233)(185,232)(186,236)(187,240)
(188,239)(189,238)(190,237)(191,221)(192,225)(193,224)(194,223)(195,222)
(196,226)(197,230)(198,229)(199,228)(200,227)(241,291)(242,295)(243,294)
(244,293)(245,292)(246,296)(247,300)(248,299)(249,298)(250,297)(251,281)
(252,285)(253,284)(254,283)(255,282)(256,286)(257,290)(258,289)(259,288)
(260,287)(261,301)(262,305)(263,304)(264,303)(265,302)(266,306)(267,310)
(268,309)(269,308)(270,307)(271,311)(272,315)(273,314)(274,313)(275,312)
(276,316)(277,320)(278,319)(279,318)(280,317)(321,401)(322,405)(323,404)
(324,403)(325,402)(326,406)(327,410)(328,409)(329,408)(330,407)(331,411)
(332,415)(333,414)(334,413)(335,412)(336,416)(337,420)(338,419)(339,418)
(340,417)(341,431)(342,435)(343,434)(344,433)(345,432)(346,436)(347,440)
(348,439)(349,438)(350,437)(351,421)(352,425)(353,424)(354,423)(355,422)
(356,426)(357,430)(358,429)(359,428)(360,427)(361,441)(362,445)(363,444)
(364,443)(365,442)(366,446)(367,450)(368,449)(369,448)(370,447)(371,451)
(372,455)(373,454)(374,453)(375,452)(376,456)(377,460)(378,459)(379,458)
(380,457)(381,471)(382,475)(383,474)(384,473)(385,472)(386,476)(387,480)
(388,479)(389,478)(390,477)(391,461)(392,465)(393,464)(394,463)(395,462)
(396,466)(397,470)(398,469)(399,468)(400,467)(481,626)(482,630)(483,629)
(484,628)(485,627)(486,621)(487,625)(488,624)(489,623)(490,622)(491,636)
(492,640)(493,639)(494,638)(495,637)(496,631)(497,635)(498,634)(499,633)
(500,632)(501,611)(502,615)(503,614)(504,613)(505,612)(506,616)(507,620)
(508,619)(509,618)(510,617)(511,601)(512,605)(513,604)(514,603)(515,602)
(516,606)(517,610)(518,609)(519,608)(520,607)(521,581)(522,585)(523,584)
(524,583)(525,582)(526,586)(527,590)(528,589)(529,588)(530,587)(531,591)
(532,595)(533,594)(534,593)(535,592)(536,596)(537,600)(538,599)(539,598)
(540,597)(541,576)(542,580)(543,579)(544,578)(545,577)(546,571)(547,575)
(548,574)(549,573)(550,572)(551,566)(552,570)(553,569)(554,568)(555,567)
(556,561)(557,565)(558,564)(559,563)(560,562);
s2 := Sym(640)!(  1,163)(  2,162)(  3,161)(  4,165)(  5,164)(  6,168)(  7,167)
(  8,166)(  9,170)( 10,169)( 11,178)( 12,177)( 13,176)( 14,180)( 15,179)
( 16,173)( 17,172)( 18,171)( 19,175)( 20,174)( 21,188)( 22,187)( 23,186)
( 24,190)( 25,189)( 26,183)( 27,182)( 28,181)( 29,185)( 30,184)( 31,193)
( 32,192)( 33,191)( 34,195)( 35,194)( 36,198)( 37,197)( 38,196)( 39,200)
( 40,199)( 41,203)( 42,202)( 43,201)( 44,205)( 45,204)( 46,208)( 47,207)
( 48,206)( 49,210)( 50,209)( 51,218)( 52,217)( 53,216)( 54,220)( 55,219)
( 56,213)( 57,212)( 58,211)( 59,215)( 60,214)( 61,228)( 62,227)( 63,226)
( 64,230)( 65,229)( 66,223)( 67,222)( 68,221)( 69,225)( 70,224)( 71,233)
( 72,232)( 73,231)( 74,235)( 75,234)( 76,238)( 77,237)( 78,236)( 79,240)
( 80,239)( 81,263)( 82,262)( 83,261)( 84,265)( 85,264)( 86,268)( 87,267)
( 88,266)( 89,270)( 90,269)( 91,278)( 92,277)( 93,276)( 94,280)( 95,279)
( 96,273)( 97,272)( 98,271)( 99,275)(100,274)(101,243)(102,242)(103,241)
(104,245)(105,244)(106,248)(107,247)(108,246)(109,250)(110,249)(111,258)
(112,257)(113,256)(114,260)(115,259)(116,253)(117,252)(118,251)(119,255)
(120,254)(121,308)(122,307)(123,306)(124,310)(125,309)(126,303)(127,302)
(128,301)(129,305)(130,304)(131,313)(132,312)(133,311)(134,315)(135,314)
(136,318)(137,317)(138,316)(139,320)(140,319)(141,288)(142,287)(143,286)
(144,290)(145,289)(146,283)(147,282)(148,281)(149,285)(150,284)(151,293)
(152,292)(153,291)(154,295)(155,294)(156,298)(157,297)(158,296)(159,300)
(160,299)(321,483)(322,482)(323,481)(324,485)(325,484)(326,488)(327,487)
(328,486)(329,490)(330,489)(331,498)(332,497)(333,496)(334,500)(335,499)
(336,493)(337,492)(338,491)(339,495)(340,494)(341,508)(342,507)(343,506)
(344,510)(345,509)(346,503)(347,502)(348,501)(349,505)(350,504)(351,513)
(352,512)(353,511)(354,515)(355,514)(356,518)(357,517)(358,516)(359,520)
(360,519)(361,523)(362,522)(363,521)(364,525)(365,524)(366,528)(367,527)
(368,526)(369,530)(370,529)(371,538)(372,537)(373,536)(374,540)(375,539)
(376,533)(377,532)(378,531)(379,535)(380,534)(381,548)(382,547)(383,546)
(384,550)(385,549)(386,543)(387,542)(388,541)(389,545)(390,544)(391,553)
(392,552)(393,551)(394,555)(395,554)(396,558)(397,557)(398,556)(399,560)
(400,559)(401,583)(402,582)(403,581)(404,585)(405,584)(406,588)(407,587)
(408,586)(409,590)(410,589)(411,598)(412,597)(413,596)(414,600)(415,599)
(416,593)(417,592)(418,591)(419,595)(420,594)(421,563)(422,562)(423,561)
(424,565)(425,564)(426,568)(427,567)(428,566)(429,570)(430,569)(431,578)
(432,577)(433,576)(434,580)(435,579)(436,573)(437,572)(438,571)(439,575)
(440,574)(441,628)(442,627)(443,626)(444,630)(445,629)(446,623)(447,622)
(448,621)(449,625)(450,624)(451,633)(452,632)(453,631)(454,635)(455,634)
(456,638)(457,637)(458,636)(459,640)(460,639)(461,608)(462,607)(463,606)
(464,610)(465,609)(466,603)(467,602)(468,601)(469,605)(470,604)(471,613)
(472,612)(473,611)(474,615)(475,614)(476,618)(477,617)(478,616)(479,620)
(480,619);
poly := sub<Sym(640)|s0,s1,s2>;

Finitely Presented Group Representation (Magma) :

poly<s0,s1,s2> := Group< s0,s1,s2 | s0*s0, s1*s1, s2*s2, 
s0*s2*s0*s2, s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1, 
s0*s1*s2*s1*s0*s1*s0*s1*s0*s1*s2*s1*s0*s1*s0*s1, 
s0*s1*s2*s1*s2*s1*s2*s1*s0*s1*s2*s1*s2*s1*s2*s1, 
s1*s0*s2*s1*s0*s1*s2*s1*s0*s1*s2*s1*s0*s1*s0*s2*s1*s0, 
s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2 >;

References : None.
to this polytope