126980957283840
126,980,957,283,840 is an even composite number composed of six prime numbers multiplied together.
What does the number 126980957283840 look like?
This visualization shows the relationship between its 6 prime factors (large circles) and 2240 divisors.
126980957283840 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of two thousand, two hundred forty divisors.
Prime factorization of 126980957283840:
29 × 33 × 5 × 116 × 17 × 61
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 3 × 5 × 11 × 11 × 11 × 11 × 11 × 11 × 17 × 61)See below for interesting mathematical facts about the number 126980957283840 from the Numbermatics database.
Names of 126980957283840
- Cardinal: 126980957283840 can be written as One hundred twenty-six trillion, nine hundred eighty billion, nine hundred fifty-seven million, two hundred eighty-three thousand, eight hundred forty.
Scientific notation
- Scientific notation: 1.2698095728384 × 1014
Factors of 126980957283840
Divisors of 126980957283840
- Number of divisors d(n): 2240
-
Complete list of divisors:
1 2 3 4 5 6 8 9 10 11 12 15 16 17 18 20 22 24 27 30 32 33 34 36 40 44 45 48 51 54 55 60 61 64 66 68 72 80 85 88 90 96 99 102 108 110 120 121 122 128 132 135 136 144 153 160 165 170 176 180 183 187 192 198 204 216 220 240 242 244 255 256 264 270 272 288 297 305 306 320 330 340 352 360 363 366 374 384 396 408 432 440 459 480 484 488 495 510 512 528 540 544 549 561 576 594 605 610 612 640 660 671 680 704 720 726 732 748 765 768 792 816 864 880 915 918 935 960 968 976 990 1020 1037 1056 1080 1088 1089 1098 1122 1152 1188 1210 1220 1224 1280 1320 1331 1342 1360 1408 1440 1452 1464 1485 1496 1530 1536 1584 1632 1647 1683 1728 1760 1815 1830 1836 1870 1920 1936 1952 1980 2013 2040 2057 2074 2112 2160 2176 2178 2196 2244 2295 2304 2376 2420 2440 2448 2560 2640 2662 2684 2720 2745 2805 2816 2880 2904 2928 2970 2992 3060 3111 3168 3264 3267 3294 3355 3366 3456 3520 3630 3660 3672 3740 3840 3872 3904 3960 3993 4026 4080 4114 4148 4224 4320 4352 4356 4392 4488 4590 4608 4752 4840 4880 4896 5049 5185 5280 5324 5368 5440 5445 5490 5610 5632 5760 5808 5856 5940 5984 6039 6120 6171 6222 6336 6528 6534 6588 6655 6710 6732 6912 7040 7260 7320 7344 7381 7480 7680 7744 7808 7920 7986 8052 8160 8228 8235 8296 8415 8448 8640 8704 8712 8784 8976 9180 9333 9504 9680 9760 9792 10065 10098 10285 10370 10560 10648 10736 10880 10890 10980 11220 11407 11520 11616 11712 11880 11968 11979 12078 12240 12342 12444 12672 13056 13068 13176 13310 13420 13464 13824 14080 14520 14640 14641 14688 14762 14960 15488 15555 15616 15840 15972 16104 16320 16335 16456 16470 16592 16830 16896 17280 17424 17568 17952 18117 18360 18513 18666 19008 19360 19520 19584 19965 20130 20196 20570 20740 21120 21296 21472 21760 21780 21960 22143 22440 22627 22814 23040 23232 23424 23760 23936 23958 24156 24480 24684 24888 25245 25344 26112 26136 26352 26620 26840 26928 27999 28160 29040 29280 29282 29376 29524 29920 30195 30855 30976 31110 31232 31680 31944 32208 32640 32670 32912 32940 33184 33660 34221 34560 34848 35136 35904 35937 36234 36720 36905 37026 37332 38016 38720 39040 39168 39930 40260 40392 41140 41480 42240 42592 42944 43520 43560 43920 43923 44286 44880 45254 45628 46464 46665 46848 47520 47872 47916 48312 48960 49368 49776 50490 50688 52272 52704 53240 53680 53856 55539 55998 57035 58080 58560 58564 58752 59048 59840 59895 60390 61710 61952 62220 63360 63888 64416 65280 65340 65824 65880 66368 66429 67320 67881 68442 69120 69696 70272 71808 71874 72468 73205 73440 73810 74052 74664 76032 77440 78080 78336 79860 80520 80784 81191 82280 82960 84480 85184 85888 87120 87840 87846 88572 89760 90508 90585 91256 92565 92928 93330 93696 95040 95744 95832 96624 97920 98736 99552 100980 102663 104544 105408 106480 107360 107712 110715 111078 111996 113135 114070 116160 117120 117128 117504 118096 119680 119790 120780 123420 124440 125477 126720 127776 128832 130560 130680 131648 131760 131769 132736 132858 134640 135762 136884 139392 139995 140544 143616 143748 144936 146410 146880 147620 148104 149328 152064 154880 156160 159720 161040 161051 161568 162382 164560 165920 170368 171105 171776 174240 175680 175692 177144 179520 179685 181016 181170 182512 185130 185856 186660 190080 191664 193248 195840 197472 199104 199287 201960 203643 205326 209088 210816 212960 214720 215424 219615 221430 222156 223992 226270 228140 232320 234240 234256 235008 236192 239360 239580 241560 243573 246840 248880 248897 250954 253440 255552 257664 261360 263296 263520 263538 265472 265716 269280 271524 273768 277695 278784 279990 281088 287232 287496 289872 292820 293760 295240 296208 298656 307989 309760 319440 322080 322102 323136 324764 329120 331840 332145 339405 340736 342210 343552 348480 351360 351384 354288 359040 359370 362032 362340 365024 370260 373320 376431 380160 383328 386496 391680 394944 395307 398208 398574 403920 405955 407286 410652 418176 421632 425920 429440 430848 439230 442860 444312 447984 452540 456280 464640 468480 468512 472384 478720 479160 483120 483153 487146 493680 497760 497794 501908 511104 513315 515328 522720 526592 527040 527076 530944 531432 538560 543048 547536 555390 557568 559980 574992 579744 585640 587520 590480 592416 597312 610929 615978 627385 638880 644160 644204 646272 649528 658240 658845 663680 664290 678810 681472 684420 696960 702720 702768 708576 718080 718740 724064 724680 730048 730719 740520 746640 746691 752862 760320 766656 772992 789888 790614 796416 797148 805255 807840 811910 814572 821304 836352 843264 851840 858880 861696 878460 885720 888624 893101 895968 905080 912560 929280 937024 944768 958320 966240 966306 974292 987360 995520 995588 996435 1003816 1018215 1022208 1026630 1030656 1045440 1053184 1054080 1054152 1062864 1077120 1086096 1095072 1110780 1119960 1129293 1149984 1159488 1171280 1175040 1180960 1184832 1194624 1217865 1221858 1231956 1244485 1254770 1277760 1288320 1288408 1292544 1299056 1316480 1317690 1327360 1328580 1357620 1368840 1380247 1393920 1405440 1405536 1417152 1436160 1437480 1448128 1449360 1449459 1460096 1461438 1481040 1493280 1493382 1505724 1533312 1539945 1545984 1579776 1581228 1592832 1594296 1610510 1615680 1623820 1629144 1642608 1672704 1703680 1717760 1756920 1771440 1771561 1777248 1786202 1791936 1810160 1825120 1874048 1882155 1889536 1916640 1932480 1932612 1948584 1974720 1976535 1991040 1991176 1992870 2007632 2036430 2044416 2053260 2090880 2108160 2108304 2125728 2154240 2172192 2190144 2192157 2221560 2239920 2240073 2258586 2299968 2318976 2342560 2361920 2369664 2389248 2415765 2435730 2443716 2463912 2488970 2509540 2555520 2576640 2576816 2585088 2598112 2632960 2635380 2654720 2657160 2679303 2715240 2737680 2737867 2760494 2787840 2811072 2834304 2874960 2896256 2898720 2898918 2920192 2922876 2962080 2986560 2986764 3011448 3054645 3066624 3079890 3091968 3159552 3162456 3188592 3221020 3231360 3247640 3258288 3285216 3387879 3407360 3513840 3542880 3543122 3554496 3572404 3583872 3620320 3650240 3653595 3733455 3748096 3764310 3779072 3833280 3864960 3865224 3897168 3949440 3953070 3982080 3982352 3985740 4015264 4072860 4106520 4140741 4181760 4216320 4216608 4251456 4308480 4344384 4348377 4380288 4384314 4443120 4465505 4479840 4480146 4517172 4599936 4637952 4685120 4723840 4739328 4778496 4831530 4871460 4887432 4927824 4977940 5019080 5111040 5153280 5153632 5196224 5265920 5270760 5314320 5314683 5358606 5430480 5475360 5475734 5520988 5622144 5646465 5668608 5749920 5792512 5797440 5797836 5840384 5845752 5924160 5973120 5973528 6022896 6109290 6133248 6159780 6324912 6377184 6442040 6462720 6495280 6516576 6570432 6720219 6775758 6901235 7027680 7085760 7086244 7108992 7144808 7167744 7240640 7247295 7300480 7307190 7466910 7496192 7528620 7666560 7729920 7730448 7794336 7898880 7906140 7964160 7964704 7971480 8030528 8037909 8145720 8213040 8213601 8281482 8363520 8433216 8502912 8688768 8696754 8760576 8768628 8857805 8886240 8931010 8959680 8960292 9034344 9199872 9275904 9370240 9447680 9478656 9663060 9742920 9774864 9824111 9855648 9955880 10038160 10222080 10307264 10392448 10541520 10628640 10629366 10717212 10860960 10950720 10951468 10960785 11041976 11200365 11244288 11292930 11337216 11499840 11585024 11594880 11595672 11691504 11848320 11946240 11947056 12045792 12218580 12319560 12422223 12649824 12754368 12884080 12925440 12990560 13033152 13140864 13396515 13440438 13551516 13689335 13802470 14055360 14171520 14172488 14217984 14289616 14335488 14481280 14494590 14600960 14614380 14933820 15057240 15182717 15333120 15459840 15460896 15588672 15797760 15812280 15929408 15942960 15944049 16061056 16075818 16291440 16426080 16427202 16562964 16866432 16939395 17005824 17377536 17393508 17521152 17537256 17715610 17772480 17862020 17919360 17920584 18068688 18399744 18740480 18895360 19326120 19485840 19549728 19648222 19711296 19911760 20076320 20614528 20703705 20784896 21083040 21257280 21258732 21434424 21721920 21741885 21901440 21902936 21921570 22083952 22400730 22488576 22585860 22999680 23189760 23191344 23383008 23696640 23892480 23894112 24091584 24113727 24437160 24639120 24640803 24844446 25299648 25508736 25768160 25981120 26066304 26281728 26573415 26793030 26880876 27103032 27378670 27604940 28110720 28343040 28344976 28435968 28579232 28962560 28989180 29201920 29228760 29472333 29867640 30114480 30116537 30365434 30666240 30921792 31177344 31624560 31858816 31885920 31888098 32122112 32151636 32582880 32852160 32854404 33125928 33601095 33732864 33878790 34011648 34755072 34787016 35074512 35431220 35544960 35724040 35838720 35841168 36137376 37266669 37480960 38652240 38971680 39099456 39296444 39422592 39823520 40152640 40189545 41068005 41229056 41407410 41569792 42166080 42514560 42517464 42868848 43443840 43483770 43802880 43805872 43843140 44167904 44801460 45171720 45548151 45999360 46379520 46382688 46766016 47393280 47788224 47832147 48183168 48227454 48874320 49120555 49278240 49281606 49688892 50599296 51017472 51536320 51962240 52132608 52563456 53146830 53586060 53761752 54206064 54757340 55209880 56221440 56686080 56689952 57158464 57925120 57978360 58457520 58944666 59735280 60228960 60233074 60730868 61843584 62111115 62354688 63249120 63717632 63771840 63776196 64244224 64303272 65165760 65704320 65708808 66251856 67202190 67465728 67757580 69574032 70149024 70862440 71089920 71448080 71677440 71682336 72274752 73922409 74533338 75913585 77304480 77943360 78198912 78592888 78845184 79647040 79720245 80305280 80379090 82136010 82458112 82814820 84332160 85029120 85034928 85737696 86887680 86967540 87605760 87611744 87686280 88335808 88416999 89602920 90343440 90349611 91096302 91998720 92765376 93532032 95576448 95664294 96366336 96454908 97748640 98241110 98556480 98563212 99377784 101198592 102034944 103072640 103924480 104265216 106293660 107172120 107523504 108065221 108412128 109514680 110419760 112442880 113379904 114316928 115956720 116915040 117889332 119470560 120457920 120466148 120568635 121461736 123204015 123687168 124222230 124709376 126498240 127435264 127543680 127552392 128606544 130331520 131408640 131417616 132503712 134404380 135515160 136644453 139148064 140298048 141724880 142179840 142896160 143364672 144549504 147361665 147844818 149066676 150582685 151827170 154608960 155886720 156397824 157185776 157690368 159294080 159440490 160610560 160758180 164272020 165629640 167009887 168664320 170058240 170069856 171475392 173775360 173935080 175223488 175372560 176671616 176833998 179205840 180686880 180699222 182192604 185530752 186333345 187064064 191152896 191328588 192732672 192909816 195497280 196482220 197112960 197126424 198755568 202397184 206145280 207848960 212587320 214344240 215047008 216130442 216824256 219029360 220839520 226759808 227740755 228633856 231913440 233830080 235778664 238941120 239160735 240915840 240932296 241137270 242923472 246408030 247374336 248444460 252996480 255087360 255104784 257213088 260663040 262817280 262835232 265007424 265250997 268808760 271030320 271048833 273288906 278296128 280596096 283449760 285792320 286729344 289099008 294723330 295689636 298133352 301165370 303654340 309217920 311773440 312795648 314371552 318588160 318880980 321221120 321516360 324195663 328544040 331259280 334019774 337328640 340139712 342950784 347870160 350446976 350745120 353343232 353667996 358411680 361373760 361398444 364385208 369612045 371061504 372666690 374128128 382305792 382657176 385819632 390994560 392964440 394225920 394252848 397511136 409933359 412290560 425174640 428688480 430094016 432260884 433648512 438058720 441679040 442084995 451748055 453519616 455481510 457267712 463826880 467660160 471557328 477882240 478321470 481831680 481864592 482274540 485846944 492816060 496888920 501029661 505992960 510174720 510209568 514426176 521326080 525670464 530014848 530501994 537617520 540326105 542060640 542097666 546577812 556592256 561192192 566899520 571584640 573458688 578198016 589446660 591379272 596266704 602330740 607308680 618435840 623546880 628743104 637176320 637761960 643032720 648391326 657088080 662518560 668039548 680279424 683222265 685901568 695740320 700893952 701490240 706686464 707335992 716823360 722747520 722796888 728770416 739224090 742123008 745333380 765314352 771639264 781989120 785928880 788451840 788505696 795022272 813146499 819866718 835049435 850349280 857376960 860188032 864521768 867297024 876117440 883358080 884169990 903496110 907039232 910963020 927653760 935320320 943114656 955764480 956642940 963663360 963729184 964549080 971693888 972586989 985632120 993777840 1002059322 1011985920 1020419136 1028852352 1051340928 1060029696 1061003988 1075235040 1080652210 1084121280 1084195332 1093155624 1113184512 1122384384 1133799040 1143169280 1146917376 1178893320 1182758544 1192533408 1204661480 1214617360 1236871680 1257486208 1275523920 1286065440 1296782652 1314176160 1325037120 1326254985 1336079096 1355244165 1360558848 1366444530 1371803136 1391480640 1401787904 1402980480 1414671984 1433646720 1445495040 1445593776 1457540832 1478448180 1490666760 1503088983 1530628704 1543278528 1563978240 1571857760 1577011392 1590044544 1620978315 1626292998 1639733436 1670098870 1700698560 1714753920 1720376064 1729043536 1734594048 1752234880 1766716160 1768339980 1806992220 1821926040 1837108757 1855307520 1870640640 1886229312 1911528960 1913285880 1927458368 1929098160 1943387776 1945173978 1971264240 1987555680 2004118644 2040838272 2049666795 2057704704 2102681856 2120059392 2122007976 2150470080 2161304420 2168242560 2168390664 2186311248 2226369024 2267598080 2286338560 2357786640 2365517088 2385066816 2409322960 2429234720 2505148305 2514972416 2551047840 2572130880 2593565304 2628352320 2650074240 2652509970 2672158192 2710488330 2721117696 2732889060 2782961280 2805960960 2829343968 2867293440 2890990080 2891187552 2915081664 2917760967 2956896360 2981333520 3006177966 3061257408 3086557056 3143715520 3154022784 3180089088 3241956630 3252585996 3279466872 3340197740 3401397120 3429507840 3440752128 3458087072 3504469760 3533432320 3536679960 3613984440 3643852080 3674217514 3710615040 3772458624 3826571760 3854916736 3858196320 3886775552 3890347956 3942528480 3975111360 4008237288 4065732495 4081676544 4099333590 4115409408 4205363712 4244015952 4300940160 4322608840 4336485120 4336781328 4372622496 4509266949 4535196160 4715573280 4731034176 4770133632 4818645920 4858469440 4862934945 5010296610 5029944832 5102095680 5144261760 5187130608 5256704640 5300148480 5305019940 5344316384 5420976660 5465778120 5511326271 5565922560 5611921920 5658687936 5734586880 5782375104 5830163328 5835521934 5913792720 5962667040 6012355932 6122514816 6173114112 6287431040 6308045568 6360178176 6483913260 6505171992 6558933744 6680395480 6802794240 6859015680 6916174144 7008939520 7073359920 7227968880 7287704160 7348435028 7515444915 7544917248 7653143520 7709833472 7716392640 7773551104 7780695912 7885056960 7950222720 8016474576 8131464990 8163353088 8198667180 8488031904 8601880320 8645217680 8672970240 8673562656 8745244992 9018533898 9185543785 9431146560 9462068352 9540267264 9637291840 9716938880 9725869890 10020593220 10204191360 10288523520 10374261216 10513409280 10600296960 10610039880 10688632768 10841953320 10931556240 11022652542 11131845120 11317375872 11564750208 11660326656 11671043868 11827585440 11925334080 12024711864 12245029632 12346228224 12574862080 12616091136 12967826520 13010343984 13117867488 13360790960 13605588480 13832348288 14146719840 14455937760 14575408320 14588804835 14696870056 15030889830 15089834496 15306287040 15419666944 15432785280 15561391824 15770113920 15900445440 16032949152 16262929980 16397334360 16533978813 16976063808 17203760640 17290435360 17347125312 17490489984 18037067796 18371087570 18862293120 18924136704 19080534528 19274583680 19433877760 19451739780 20041186440 20408382720 20577047040 20748522432 21026818560 21220079760 21377265536 21683906640 21863112480 22045305084 22546334745 22634751744 23129500416 23320653312 23342087736 23655170880 23850668160 24049423728 24490059264 25149724160 25935653040 26020687968 26235734976 26721581920 27556631355 27664696576 28293439680 28911875520 29150816640 29177609670 29393740112 30061779660 30612574080 30865570560 31122783648 31540227840 31800890880 32065898304 32525859960 32794668720 33067957626 33952127616 34580870720 34694250624 34980979968 36074135592 36742175140 37724586240 37848273408 38549167360 38867755520 38903479560 40082372880 40816765440 41497044864 42440159520 42754531072 43367813280 43726224960 44090610168 45092669490 45269503488 46259000832 46684175472 47310341760 47701336320 48098847456 49601936439 51871306080 52041375936 52471469952 53443163840 55113262710 55329393152 56586879360 57823751040 58301633280 58355219340 58787480224 60123559320 61225148160 61731141120 62245567296 63080455680 64131796608 65051719920 65589337440 66135915252 67904255232 69161741440 69388501248 69961959936 72148271184 73484350280 75449172480 77098334720 77806959120 80164745760 82669894065 82994089728 84880319040 85509062144 86735626560 87452449920 88181220336 90185338980 93368350944 94620683520 95402672640 96197694912 99203872878 103742612160 104082751872 104942939904 106886327680 110226525420 113173758720 115647502080 116603266560 116710438680 117574960448 120247118640 122450296320 124491134592 128263593216 130103439840 131178674880 132271830504 135808510464 138323482880 138777002496 144296542368 146968700560 155613918240 160329491520 165339788130 165988179456 169760638080 173471253120 174904899840 176362440672 180370677960 186736701888 189241367040 192395389824 198407745756 207485224320 208165503744 209885879808 213772655360 220453050840 226347517440 231295004160 233420877360 235149920896 240494237280 248009682195 248982269184 256527186432 260206879680 262357349760 264543661008 276646965760 288593084736 293937401120 311227836480 320658983040 330679576260 339521276160 346942506240 349809799680 352724881344 360741355920 373473403776 384790779648 396815491512 414970448640 416331007488 427545310720 440906101680 466841754720 470299841792 480988474560 496019364390 497964538368 520413759360 524714699520 529087322016 577186169472 587874802240 622455672960 641317966080 661359152520 679042552320 693885012480 705449762688 721482711840 746946807552 769581559296 793630983024 829940897280 881812203360 933683509440 940599683584 961976949120 992038728780 1040827518720 1049429399040 1058174644032 1154372338944 1175749604480 1244911345920 1282635932160 1322718305040 1410899525376 1442965423680 1493893615104 1587261966048 1763624406720 1867367018880 1923953898240 1984077457560 2081655037440 2116349288064 2308744677888 2351499208960 2489822691840 2645436610080 2821799050752 2885930847360 3174523932096 3527248813440 3734734037760 3847907796480 3968154915120 4232698576128 4702998417920 5290873220160 5771861694720 6349047864192 7054497626880 7469468075520 7936309830240 8465397152256 10581746440320 11543723389440 12698095728384 14108995253760 15872619660480 21163492880640 25396191456768 31745239320960 42326985761280 63490478641920 126980957283840
- Sum of all divisors σ(n): 533949081589440
- Sum of proper divisors (its aliquot sum) s(n): 406968124305600
- 126980957283840 is an abundant number, because the sum of its proper divisors (406968124305600) is greater than itself. Its abundance is 279987167021760
Bases of 126980957283840
- Binary: 111001101111101000011101101101000100110000000002
- Hexadecimal: 0x737D0EDA2600
- Base-36: 190E8VEYO0
Squares and roots of 126980957283840
- 126980957283840 squared (1269809572838402) is 16124163512720398750325145600
- 126980957283840 cubed (1269809572838403) is 2047461718246400478188449030744628527104000
-
The
square root of 126980957283840 is 11268582.7540041609 -
The
cube root of 126980957283840 is 50262.7445256653
Scales and comparisons
How big is 126980957283840?- 126,980,957,283,840 seconds is equal to 4,037,601 years, 34 weeks, 3 days, 14 hours, 24 minutes.
-
To count from 1 to 126,980,957,283,840 would take you about ten million, ninety-four thousand and four 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 126980957283840 cubic inches would be around 4188.6 feet tall.
Recreational maths with 126980957283840
- 126980957283840 backwards is 048382759089621
- 126980957283840 is a
Harshad number . - The number of decimal digits it has is: 15
- The sum of 126980957283840'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 126980957283840 - Facts about the integer". Numbermatics.com. 2024. Web. 30 May 2024.
APA style:
Numbermatics. (2024). Number 126980957283840 - Facts about the integer. Retrieved 30 May 2024, from https://numbermatics.com/n/126980957283840/
Chicago style:
Numbermatics. 2024. "Number 126980957283840 - Facts about the integer". https://numbermatics.com/n/126980957283840/
The information we have on file for 126980957283840 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 126980957283840, math, Factors of 126980957283840, curriculum, school, college, exams, university, Prime factorization of 126980957283840, STEM, science, technology, engineering, physics, economics, calculator, one hundred twenty-six trillion, nine hundred eighty billion, nine hundred fifty-seven million, two hundred eighty-three thousand, eight hundred forty.