18435486542091750
18,435,486,542,091,750 is an even composite number composed of nine prime numbers multiplied together.
18435486542091750 is an even composite number. It is composed of nine distinct prime numbers multiplied together. It has a total of two thousand and forty-eight divisors.
Prime factorization of 18435486542091750:
2 × 33 × 53 × 19 × 41 × 89 × 137 × 421 × 683
(2 × 3 × 3 × 3 × 5 × 5 × 5 × 19 × 41 × 89 × 137 × 421 × 683)See below for interesting mathematical facts about the number 18435486542091750 from the Numbermatics database.
Names of 18435486542091750
- Cardinal: 18435486542091750 can be written as Eighteen quadrillion, four hundred thirty-five trillion, four hundred eighty-six billion, five hundred forty-two million, ninety-one thousand, seven hundred fifty.
Scientific notation
- Scientific notation: 1.843548654209175 × 1016
Factors of 18435486542091750
Divisors of 18435486542091750
- Number of divisors d(n): 2048
-
Complete list of divisors:
1 2 3 5 6 9 10 15 18 19 25 27 30 38 41 45 50 54 57 75 82 89 90 95 114 123 125 135 137 150 171 178 190 205 225 246 250 267 270 274 285 342 369 375 410 411 421 445 450 475 513 534 570 615 675 683 685 738 750 779 801 822 842 855 890 950 1025 1026 1107 1125 1230 1233 1263 1335 1350 1366 1370 1425 1558 1602 1691 1710 1845 2049 2050 2055 2105 2214 2225 2250 2337 2375 2403 2466 2526 2565 2603 2670 2850 3075 3375 3382 3415 3425 3649 3690 3699 3789 3895 4005 4098 4110 4210 4275 4450 4674 4750 4806 5073 5125 5130 5206 5535 5617 6147 6150 6165 6315 6675 6750 6830 6850 7011 7125 7298 7398 7578 7790 7809 7999 8010 8455 8550 9225 10146 10245 10250 10275 10525 10947 11070 11125 11234 11367 11685 12015 12193 12294 12330 12630 12825 12977 13015 13350 14022 14250 15219 15375 15618 15998 16851 16910 17075 17125 17261 18245 18441 18450 18495 18945 19475 20025 20490 20550 21033 21050 21375 21894 22250 22734 23370 23427 23997 24030 24386 25365 25650 25954 26030 27675 28003 28085 30438 30735 30750 30825 31575 32841 33375 33702 34150 34250 34522 35055 36490 36579 36882 36990 37469 37890 38931 38950 39045 39995 40050 42066 42275 42750 45657 46125 46854 47994 50553 50730 51225 51375 51783 52625 54735 55350 56006 56170 56835 57677 58425 60075 60787 60965 61470 61650 63150 64125 64885 65075 65682 66750 69331 70110 70281 71991 73158 74938 76095 77862 78090 79990 84009 84255 84550 85375 86305 91225 91314 92205 92250 92475 93571 94725 97375 98523 100125 101106 102450 102750 103566 105165 105250 106723 109470 109737 112407 113670 115354 116793 116850 117135 119985 120150 121574 121930 126825 128250 129770 130150 138375 138662 140015 140425 140562 143982 151659 152190 153675 154125 155349 157875 164205 168018 168510 170750 172610 173031 175275 182361 182450 182895 184410 184950 187142 187345 189450 194655 194750 195225 197046 199975 200250 207993 210330 211375 213446 215973 219474 224814 228285 231667 233586 234270 239970 252027 252765 253650 256125 258915 273675 276750 280030 280713 280850 284175 287543 288385 292125 300375 303318 303935 304825 307350 308250 310698 315750 320169 324425 325375 327959 328410 329211 337221 346062 346655 350379 350550 351405 359955 364722 365790 374690 380475 389310 390450 399950 415986 420045 421275 422750 431525 431946 456125 456570 461025 462375 463334 466047 467855 473625 492615 499913 504054 505530 512250 517830 519093 525825 532057 533615 547083 547350 548685 561426 562035 568350 575086 576770 583965 584250 585675 599925 600750 607870 609650 623979 634125 640338 648850 650750 655918 658422 674442 693310 695001 700075 700758 702125 702810 711911 719910 756081 758295 760950 768375 776745 821025 840090 842139 842550 862629 863050 865155 876375 911805 912250 914475 922050 924750 932094 935710 936725 947250 960507 973275 976125 983877 985230 999826 999875 1011663 1038186 1039965 1051650 1064114 1067230 1079865 1094166 1095863 1097370 1124070 1141425 1154953 1158335 1167930 1171350 1199850 1247958 1260135 1263825 1268250 1294575 1368375 1390002 1400150 1403565 1404250 1420875 1423822 1437715 1441925 1499739 1512162 1516590 1519675 1524125 1536229 1536750 1553490 1557279 1596171 1600845 1622125 1639795 1641249 1642050 1646055 1684278 1686105 1725258 1730310 1733275 1751895 1752750 1757025 1777849 1799775 1823610 1828950 1871937 1873450 1902375 1921014 1946550 1952250 1967754 1999750 2023326 2079930 2085003 2100225 2106375 2135733 2157625 2159730 2191726 2282850 2305125 2309906 2316670 2330235 2339275 2364757 2463075 2492267 2499565 2520270 2526417 2527650 2587887 2589150 2595465 2629125 2660285 2668075 2735415 2736750 2743425 2807130 2810175 2841750 2875430 2881521 2883850 2919825 2928375 2951631 2999478 2999625 3039350 3048250 3072458 3114558 3119895 3192342 3201690 3244250 3279590 3282498 3287589 3292110 3372210 3464859 3466550 3475005 3500375 3503790 3514050 3555698 3559555 3599550 3743874 3780405 3791475 3804750 3836411 3883725 4105125 4170006 4200450 4210695 4212750 4271466 4313145 4315250 4325775 4499217 4559025 4572375 4608687 4610250 4660470 4678550 4683625 4729514 4788513 4802535 4866375 4919385 4926150 4984534 4999130 5052834 5058315 5133253 5175774 5190930 5199825 5258250 5320570 5333547 5336150 5399325 5463317 5470830 5479315 5486850 5620350 5707125 5763042 5774765 5791675 5839650 5856750 5903262 5999250 6239790 6255009 6300675 6319125 6407199 6472875 6575178 6929718 6950010 7000750 7017825 7094271 7119110 7188575 7209625 7476801 7498695 7560810 7582950 7598375 7672822 7681145 7763661 7767450 7786395 7980855 8004225 8198975 8206245 8210250 8230275 8327819 8421390 8430525 8626290 8651550 8666375 8759475 8785125 8854893 8889245 8998434 8998875 9118050 9144750 9217374 9359685 9367250 9498347 9577026 9605070 9732750 9838770 9862767 10116630 10266506 10394577 10399650 10425015 10501125 10667094 10678665 10798650 10926634 10958630 11414250 11509233 11549530 11583350 11651175 11696375 11789263 11823785 12315375 12461335 12497825 12510018 12601350 12632085 12638250 12814398 12939435 12945750 12977325 13301425 13340375 13497651 13677075 13717125 13826061 14035650 14050875 14188542 14365539 14377150 14407605 14419250 14599125 14758155 14953602 14997390 15196750 15362290 15399759 15527322 15572790 15599475 15961710 16000641 16008450 16389951 16397950 16412490 16437945 16460550 16655638 16861050 17324295 17332750 17375025 17518950 17570250 17709786 17778490 17797775 17997750 18719370 18902025 18957375 18996694 19182055 19221597 19418625 19725534 20789154 20850030 21002250 21053475 21282813 21357330 21565725 21628875 22430403 22496085 22795125 23018466 23043435 23302350 23392750 23578526 23647570 23942565 24012675 24596925 24630750 24922670 24983457 24995650 25264170 25291575 25591327 25666265 25878870 25954650 25999125 26602850 26667735 26680750 26995302 26996625 27316585 27354150 27396575 27434250 27652122 28101750 28495041 28731078 28815210 28873825 28958375 29188351 29198250 29516310 29588301 30799518 31183731 31198950 31275045 31503375 32001282 32035995 32779902 32875890 34527699 34648590 34750050 35089125 35367789 35471355 35595550 35942875 37384005 37493475 37804050 37914750 38364110 38405725 38443194 38818305 38837250 38931975 39393391 39904275 40021125 40994875 41031225 41151375 41478183 41639095 42106950 42152625 42565626 43131450 43257750 43797375 44274465 44446225 44860806 44930383 44992170 45590250 46086870 46199277 46798425 47353073 47491735 47885130 48001923 48025350 49169853 49193850 49313835 49966914 50583150 51182654 51332530 51972885 51998250 52125075 53335470 53393325 53993250 54633170 54793150 56990082 57546165 57747650 57916750 58255875 58376702 58946315 59118925 59176602 62306675 62367462 62489125 62550090 63006750 63160425 63848439 64071990 64697175 64886625 66507125 67291209 67488255 68385375 69055398 69130305 70178250 70735578 70942710 71827695 71885750 72038025 72891809 73790775 74768010 74950371 74986950 76773981 76811450 76998795 77636610 77863950 77997375 78786782 79808550 80003205 80042250 81949755 81989750 82062450 82189725 82302750 82956366 83278190 84305250 85485123 86621475 86875125 87565053 87594750 88548930 88892450 88988875 89860766 92398554 93596850 94510125 94706146 94983470 95910275 96003846 96107985 97531807 98339706 98627670 103583097 103945770 104250150 105267375 106103367 106414065 106786650 107828625 112152015 112480425 115092330 115217175 116511750 117892630 118180173 118237850 119712825 120063375 122984625 124613350 124917285 124978250 126320850 126457875 127696878 127956635 128331325 129394350 129773250 133014250 133338675 134582418 134791149 134976510 136582925 136770750 136982875 138260610 138597831 142059219 142475205 143655390 144076050 144369125 145783618 145941755 147509559 147581550 147941505 149900742 153547962 153997590 155918655 155994750 156375225 158228561 160006410 160179975 163899510 164379450 170970246 172638495 173242950 173750250 175130106 176838945 177356775 177977750 186920025 187467375 189020250 191820550 192028625 192215970 194091525 194659875 195063614 196966955 199521375 205156125 207166194 207390915 208195475 210463373 210534750 212206734 212828130 215657250 218675427 221372325 222231125 223995997 224304030 224651915 224851113 224960850 230321943 230434350 230996385 233992125 236360346 236765365 237458675 239425650 240009615 240126750 245849265 245969250 246569175 249834570 252915750 255913270 256455369 256662650 259864425 260625375 262695159 266677350 266966625 269582298 273165850 273965750 277195662 284118438 284950410 287730825 288738250 291883510 292595421 294731575 295019118 295594625 295883010 311533375 311837310 312750450 315802125 316457122 318310101 319242195 320359950 323485875 336456045 337441275 341440579 345276990 345651525 353677890 354540519 354713550 359138475 360190125 364459045 368953875 373840050 374751855 374934750 383869905 384057250 384993975 388183050 389319750 393933910 399042750 400016025 404373447 409748775 410312250 410948625 414781830 416390950 420926746 426177657 427425615 433107375 437350854 437825265 442744650 444462250 447991994 449303830 449702226 460643886 461992770 467984250 473530730 474685683 474917350 479551375 480019230 480539925 486235213 487659035 491698530 493138350 512910738 517915485 519728850 521250750 525390318 530516835 532070325 533933250 560760075 562402125 575461650 576085875 585190842 589463150 590900865 591189250 598564125 623066750 624586425 631390119 631604250 636620202 638484390 639783175 641656625 646971750 656026281 666693375 671987991 672912090 673955745 674882550 682881158 682914625 690965829 691303050 692989155 709081038 710296095 712376025 718276950 720380250 728918090 729708775 737547795 737907750 739707525 748474429 749503710 767739810 769987950 779593275 781876125 788085477 791142805 800032050 800899875 808746894 819497550 821897250 852355314 854851230 863192475 866214750 875650530 877786263 884194725 886783875 934600125 949371366 959102750 961079850 970457625 972470426 975318070 984834775 1024321737 1035830970 1036954575 1040977375 1049244407 1052316865 1061033670 1063621557 1064140650 1093377135 1106861625 1119979985 1121520150 1123259575 1124255565 1124804250 1151609715 1152171750 1154981925 1181801730 1183826825 1187293375 1197128250 1200048075 1213120341 1229246325 1232845875 1249172850 1262780238 1278532971 1279566350 1282276845 1283313250 1299322125 1312052562 1313475795 1333386750 1343975982 1347911490 1365829250 1381931658 1385978310 1420592190 1424057049 1424752050 1438654125 1458705639 1459417550 1462977105 1473657875 1475095590 1479415050 1496948858 1559186550 1563752250 1576170954 1582285610 1591550505 1596210975 1601799750 1615129031 1682280225 1687206375 1707202895 1726384950 1728257625 1755572526 1768389450 1772702595 1773567750 1795692375 1822295225 1869200250 1873759275 1894170357 1919349525 1924969875 1940915250 1968078843 1969669550 2000080125 2015963973 2021867235 2048643474 2048743875 2073909150 2081954750 2098488814 2104633730 2127243114 2130888285 2137128075 2186754270 2189126325 2213723250 2239959970 2245423287 2246519150 2248511130 2303219430 2309963850 2367653650 2373428415 2374586750 2400096150 2402699625 2426240682 2431176065 2438295175 2458492650 2465691750 2557065942 2564553690 2589577425 2598644250 2626951590 2633358789 2652584175 2660351625 2803800375 2848114098 2877308250 2917411278 2925954210 2947315750 2954504325 3072965211 3122932125 3147733221 3156950595 3183101010 3192421950 3198915875 3230258062 3280131405 3359939955 3364560450 3369778725 3374412750 3414405790 3454829145 3456515250 3464945775 3506011799 3545405190 3551480475 3561880125 3591384750 3644590450 3648543875 3687738975 3698537625 3742372145 3747518550 3788340714 3838699050 3849939750 3897966375 3936157686 3940427385 3955714025 3998804087 4000160250 4031927946 4043734470 4097487750 4261776570 4272171147 4274256150 4315962375 4376116917 4378252650 4388931315 4420973625 4490846574 4746856830 4805399250 4845387093 4862352130 4876590350 4924173875 5121608685 5179154850 5184772875 5246222035 5261584325 5266717578 5305168350 5318107785 5320703250 5466885675 5599899925 5607600750 5616297875 5621277825 5682511071 5758048575 5774909625 5909008650 5919134125 6000240375 6047891919 6065601705 6145930422 6146231625 6245864250 6295466442 6313901190 6392664855 6397831750 6411384225 6487371001 6560262810 6567378975 6719879910 6736269861 6739557450 6909658290 6929891550 7012023598 7102960950 7120285245 7123760250 7293528195 7297087750 7314885525 7375477950 7397075250 7484744290 7795932750 7880854770 7911428050 7957752525 7981054875 7997608174 8075645155 8411401125 8536014475 8544342294 8631924750 8752233834 8777862630 8841947250 8863512975 9111476125 9218895633 9368796375 9443199663 9470851785 9596747625 9690774186 9840394215 9848347750 10079819865 10109336175 10243217370 10369545750 10492444070 10518035397 10523168650 10636215570 10654441425 10685640375 10933771350 10945631625 11199799850 11227116435 11232595750 11242555650 11365022142 11516097150 11549819250 11838268250 11867142075 11996412261 12000480750 12095783838 12131203410 12155880325 12191475875 12292463250 12785329710 12822768450 12947887125 12974742002 13128350751 13134757950 13166793945 13262920875 13472539722 14240570490 14536161279 14587056390 14629771050 14772521625 15364826055 15738666105 15784752975 15915505050 15962109750 16151290310 16400657025 16799699775 16822802250 16848893625 17072028950 17274145725 17324728875 17530058995 17727025950 17757402375 18222952250 18437791266 18438694875 18711860725 18737592750 18886399326 18941703570 19193495250 19462113003 19680788430 19702136925 19778570125 19935643733 19994020435 20159639730 20208809583 20218672350 21036070794 21308882850 21360855735 21371280750 21880584585 21891263250 21944656575 22454232870 23734284150 23992824522 24226935465 24311760650 24382951750 25608043425 25895774250 26231110175 26256701502 26307921625 26333587890 26525841750 26590538925 27334428375 27999499625 28106389125 28329598989 28412555355 28790242875 29072322558 29545043250 30239459595 30328008525 30687451589 30729652110 31477332210 31554106191 31569505950 31963324275 32056921125 32436855005 32801314050 32836894875 33599399550 33681349305 33697787250 34548291450 34649457750 35060117990 35514804750 35601426225 35989236783 36467640975 36574427625 36877389750 37423721450 38924226006 39404273850 39557140250 39788762625 39871287466 39988040870 40378225775 40417619166 42680072375 42721711470 43608483837 43761169170 43889313150 44317564875 46094478165 47215998315 47354258925 48453870930 49201971075 50399099325 50546680875 51216086850 52462220350 52590176985 52615843250 53181077850 53272207125 54668856750 55998999250 56135582175 56212778250 56659197978 56825110710 57580485750 58386339009 59335710375 59806931199 59982061305 60478919190 60656017050 60779401625 61374903178 63108212382 63926648550 64113842250 64873710010 65641753755 65673789750 65833969725 66614224181 67362698610 71202852450 71978473566 72680806395 72935281950 73148855250 76824130275 78693330525 78923764875 79577525250 80756451550 82003285125 83998498875 85360144750 86370728625 87216967674 87650294975 88635129750 92062354767 92188956330 93559303625 94431996630 94662318573 94708517850 97310565015 98403942150 98510684625 99678218665 99970102175 100798198650 101044047915 101093361750 105180353970 106544414250 106804278675 107967710349 109402922925 109723282875 112271164350 116772678018 118671420750 119613862398 119964122610 121134677325 121558803250 128040217125 131155550875 131283507510 131667939450 132952694625 133228448362 141647994945 142062776775 143746483759 145361612790 151197297975 151640042625 153437257945 153648260550 157386661050 157770530955 157847529750 159816621375 162184275025 164006570250 167996997750 168406746525 172741457250 175159017027 175300589950 178007131125 179420793597 179946183915 182338204875 184124709534 187118607250 189324637146 194621130030 197021369250 199356437330 199842672543 199940204350 201891128875 202088095830 213608557350 215935420698 218042419185 218805845850 219446565750 230472390825 236079991575 236771294625 242269354650 246009855375 251995496625 256080434250 262311101750 262950884925 265905389250 276187064301 280677910875 283295989890 284125553550 287492967518 291931695045 299034655995 299910306525 302394595950 303280085250 306874515890 315541061910 319633242750 324368550050 328208768775 329169848625 333071120905 336813493050 350318034054 356014262250 358841587194 359892367830 363404031975 364676409750 384120651375 393466652625 399685345086 403782257750 431239451277 436084838370 438251474875 460311773835 460944781650 472159983150 473311592865 473542589250 486552825075 492019710750 498391093325 499850510875 503990993250 505220239575 525901769850 534021393375 538262380791 539838551745 547014614625 552374128602 561355821750 583863390090 598069311990 599528017629 599820613050 605673386625 656417537550 658339697250 666142241810 708239974725 710313883875 718732418795 726808063950 755986489875 767186289725 768241302750 786933305250 788852654775 810921375125 828561192903 842033732625 862478902554 875795085135 876502949750 897103967985 899730919575 920623547670 946623185730 973105650150 996782186650 999213362715 999701021750 1010440479150 1068042786750 1076524761582 1079677103490 1090212095925 1094029229250 1152361954125 1180399957875 1199056035258 1211346773250 1293718353831 1314754424625 1380935321505 1416479949450 1420627767750 1437464837590 1459658475225 1495173279975 1499551532625 1511972979750 1534372579450 1577705309550 1621842750250 1641043843875 1657122385806 1665355604525 1684067465250 1751590170270 1794207935970 1798584052887 1799461839150 1817020159875 1998426725430 2156197256385 2180424191850 2301558869175 2304723908250 2360799915750 2366557964325 2432764125375 2491955466625 2526101197875 2587436707662 2629508849250 2691311903955 2699192758725 2731183191421 2761870643010 2919316950450 2990346559950 2997640088145 2999103065250 3282087687750 3330711209050 3541199873625 3593662093975 3597168105774 3634040319750 3835931448625 3881155061493 3944263273875 4142805964515 4312394512770 4378975425675 4485519839925 4498654597875 4603117738350 4733115928650 4865528250750 4983910933250 4996066813575 5052202395750 5382623807910 5398385517450 5451060479625 5462366382842 5995280176290 6468591769155 6904676607525 7082399747250 7187324187950 7298292376125 7475866399875 7671862897250 7762310122986 7888526547750 8193549574263 8285611929030 8326778022625 8757950851350 8971039679850 8992920264435 8997309195750 9992133627150 10780986281925 10902120959250 11507794345875 11832789821625 12937183538310 13456559519775 13495963793625 13655915957105 13809353215050 14596584752250 14951732799750 14988200440725 16387099148526 16653556045250 17968310469875 17985840528870 19405775307465 20714029822575 21561972563850 21894877128375 22427599199625 23015588691750 23665579643250 24580648722789 24980334067875 26913119039550 26991927587250 27311831914210 29976400881450 32342958845775 34523383037625 35936620939750 38811550614930 40967747871315 41428059645150 43789754256750 44855198399250 44964601322175 49161297445578 49960668135750 53904931409625 64685917691550 67282797598875 68279579785525 69046766075250 73741946168367 74941002203625 81935495742630 89929202644350 97028876537325 103570149112875 107809862819250 122903243613945 134565595197750 136559159571050 147483892336734 149882004407250 161714794228875 194057753074650 204838739356575 207140298225750 224823006610875 245806487227890 323429588457750 341397898927625 368709730841835 409677478713150 449646013221750 485144382686625 614516218069725 682795797855250 737419461683670 970288765373250 1024193696782875 1229032436139450 1843548654209175 2048387393565750 3072581090348625 3687097308418350 6145162180697250 9217743271045875 18435486542091750
- Sum of all divisors σ(n): 56373536314368000
- Sum of proper divisors (its aliquot sum) s(n): 37938049772276250
- 18435486542091750 is an abundant number, because the sum of its proper divisors (37938049772276250) is greater than itself. Its abundance is 19502563230184500
Bases of 18435486542091750
- Binary: 10000010111111011111010001100101001101001010101111001102
- Hexadecimal: 0x417EFA329A55E6
- Base-36: 51IU1LL05PI
Squares and roots of 18435486542091750
- 18435486542091750 squared (184354865420917502) is 339867164043646029544465418062500
- 18435486542091750 cubed (184354865420917503) is 6265616528825525490579731128486327166982234375000
-
The
square root of 18435486542091750 is 135777341.7845987659 -
The
cube root of 18435486542091750 is 264170.8344001923
Scales and comparisons
How big is 18435486542091750?- 18,435,486,542,091,750 seconds is equal to 586,191,447 years, 17 weeks, 2 days, 18 hours, 22 minutes, 30 seconds.
-
To count from 1 to 18,435,486,542,091,750 would take you about one billion, seven hundred fifty-eight million, five hundred seventy-four thousand, three hundred forty-two years!
This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)
- A cube with a volume of 18435486542091750 cubic inches would be around 22014.2 feet tall.
Recreational maths with 18435486542091750
- 18435486542091750 backwards is 05719024568453481
- The number of decimal digits it has is: 17
- The sum of 18435486542091750's digits is 72
- More coming soon!
Link to this page
HTML: To link to this page, just copy and paste the link below into your blog, web page or email.
BBCODE: To link to this page in a forum post or comment box, just copy and paste the link code below:
Cite this page
MLA style:
"Number 18435486542091750 - Facts about the integer". Numbermatics.com. 2024. Web. 12 June 2024.
APA style:
Numbermatics. (2024). Number 18435486542091750 - Facts about the integer. Retrieved 12 June 2024, from https://numbermatics.com/n/18435486542091750/
Chicago style:
Numbermatics. 2024. "Number 18435486542091750 - Facts about the integer". https://numbermatics.com/n/18435486542091750/
The information we have on file for 18435486542091750 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!
Keywords: Divisors of 18435486542091750, math, Factors of 18435486542091750, curriculum, school, college, exams, university, Prime factorization of 18435486542091750, STEM, science, technology, engineering, physics, economics, calculator, eighteen quadrillion, four hundred thirty-five trillion, four hundred eighty-six billion, five hundred forty-two million, ninety-one thousand, seven hundred fifty.