How to show extremely large number in overleaf?

Question

I need to show the following Private exponent in overleaf:

25895107538405649688030348996832713569445142790008475239637397869318784772667910655793716697799988593837576806840542707041271719702620953276919316028023188172858715581748693955423981219211598229098207640461515095150909429377751547299151096360584320956677376726662632688048877225179958200801974706011616367315862498611926410040512147744526352916435462209101103537694846510922824847023862008422155278088141453891428873975315666229324633723121265174758771509620329121402787550477990418192871933144340836905002232237390458813578151790533395549611841467387066143850419849217555661401483288249447617461025564522092185741861

I tried to implement solution from this link. But it is giving me many errors such as:

Extra }, or forgotten $.
<argument> $25\ifmmode \egroup 
                               \egroup \)\egroup \ \bgroup \(\bgroup \bgroup...
l.6 ...401483288249447617461025564522092185741861}
I've deleted a group-closing symbol because it seems to be
spurious, as in $x}$'. But perhaps the } is legitimate and you forgot something else, as in\hbox{$x}'. In such cases
the way to recover is to insert both the forgotten and the
deleted material, e.g., by typing `I$}'.
<inserted text> 
                }
l.6 ...401483288249447617461025564522092185741861}
I've inserted something that you may have forgotten.
(See the <inserted text> above.)
With luck, this will get me unwedged. But if you
really didn't forget anything, try typing `2' now; then
my insertion and my current dilemma will both disappear.
...

Could you please help me work?

Answer 1

The example fails with newer versions of siunitx. But you can use, e.g., \linebreak[1] to allow line breaks instead of temporary end the math mode:

\documentclass{article}
\usepackage{siunitx}
\begin{document}
\num[group-separator={\ \linebreak[1]}]{1451021909475683544397180425718887307279401554566608193938885574952589688465448124261693478147227524305188866387415520693390315419812023119162899230181713504820009898017675273936298787866405953285010798454510997031961275114681722912704237960309072708675761902472598144972073950338446367528184459770140534577084346500097507041508961333221117218262369027057499934996931707801631380702542248116054684353796834760364931579248960577783432380546041303490027840674867315843127906466235284795881869170825339879296015278533803535473731865112245532821378535548840039821088785414238937098975823464013050626067587404779002584244088546771103713917429769026770486991089637190783024405223010160737731528310696732010478423012858167835673365197272130326192701047654154903482123826210114545446074423558150330080473178131329744977942775518548751504509043160821597954264285601928058368892521781642860265054681276002372735586971941734468905817204442982938900340368627300222918752453724763491808654775245020322454671225114906459215597334262609062071494416567405501695347347534129488730859562909700747241043153212190610808895757228202631071478310749741824651259351746503936723393465416822498109360241315551369518278696736498058156547811906510357598482626525586232318167665341696768980223321408834973094733199459969518192026813016129940599578256562980046800044094128817006945058080455273272148667601374161168194479361967379888656211176415639455240136940176164029095723775711552377656449652439816763274342488000219487895990613402287658400015104002618636493392272944541606303388702174809675640750227387407313931189781126709540071899455459571770659959529130984036906893255945820658202316120062733541647401248881501617233033726058734924689063771615104438699161157395552391659874970997571662267974879784214715872668775979682523137555588942305090459777967066954239232500734745060219056915939148565370862897750586404463007398485755241716476669417400744623744229452680144168801583667983496090896506379549878791152504336568010515725153473301250270794958612992204098173423731557032239830960573232574186943973832621046585946567609664193622628119976769335477392887438843343361969748432538980475232556961743812243634077681175989284096633271300445219402829316678659432331698858854054833752277114809046453029483159645758583502456601830951834791508578788224676705925198359201548646367866959643859204900831499255634225359709917081726151919311095831558257957961259089797337507767532292572216730565633780231828836674696785421648591379880148537862476012741973951606680506361529818644315571484781422716839712930720065952815121534729845970012344332657225365182372567337962980016264099864639599418448238860098376759736237326451609886415902627996372694974242542896538997447420628853902552300877950510117940318353039992360712871164974941795285683414666824743199544677247454249457684229476170623052225331648435343093870809475660391365137325153730937201605626971174859709953781624533441271872267365890764875015797993621661149073699253837447760084970562401318109177012867648506958105404887468590408305014037549150546148494612512545133797961176407286228660537271210600682637041183689833030142963445234979450141224877750576061434449084978356901450437150546177032849505937760720226487861357143946427652067547472519802156462105160011950565221121353299262220236079009181575431291249283177839064665956004069045990113605644916213257935476029191119382062542243135224414240937267225598199855473072140223689606801729139900260852465949473315645856046845428697274411704398032691017467617891170706310360525491530402106169797784961153382062961331711484688947669618190801574469177368458142172176611627813640164250441326768829655306177364088948707994107952331923725049737379873470014943299392046057152829580817806531388243520847036265352911406579606257272966504189835155968091827983914724539305488099778358268021859392559460762450009037966252276488487947249722873916867879221789591859732304288990292318346053400581201421650136364597667158423157463365323784599956057258575792390320544198071750775414838751684403198073679870525038342769585896177780955180405833925104438169296727351983383608749934744560129474380621048277175594661536413802577669959221432855346538486290882917287144307170162726063794835540656765658619626157185779735197387275345511534197440320868993182288884061809583785683583639422096416737369318204333782126917097252462293279181188891279951682343001468473583876185777677958997422684280507453224303558893477815432493350902353509350661633593838323002126088756731032909490840875660553838539723400627183178520094464839725451311083387815321390941485515614740658019954492631402212956234684081129591734837474155435127596609949753958377243855977625441345513439251827257765057533656806277724466856513325473265058894815114526526248317445232178660063107866758911540089568548144389666262459642197207263417999812852155132852440914703918115519525407905412531483370769325347833220624328517310878741426110860036347672862792218045260349345342527112730770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\end{document}