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Enter a value, an expression, or a term with a variable like 10^n+1 to list a range. Switch to Database id to look a number up by its stored id. Reading never stores anything; use Create to add a number to the database. See the expression syntax & functions reference.

P · Proven prime
id #1100000008799243279 3,089 digits created 2026-05-10

Value

40878233877129165340068627710343312798952005208931040355055949431035817129149813154677731101531575705750711614203150994713706787553124541950302971624592031020388456635562782591663117361507757919329222297666403757197082311714671117142269658092137008202946268570673435557316932674190005756746850830956408472528713249853555510720724791432148827938875861845805551717788947963656823208294340872427794926596501320854748006635086959997376784806990066572569434440536259538675454267577414717475553958846461681367270732606541324674971310834346852388159216334478485244238954269284289413910236728518259029664161604268214756973926825836284816536779711438834392740546483625568896327835610920325546873501529594169535817229438371515040951488616997823738220427328736068173685633303676753706066032820286242634764136296986041057808649677287289462909824874244513627665702344634484457011175175616269737680251135359641707597306343524504610807588405422367557865523396816871149432863108690719533154054733339868628460445244578074447063779532037082404076270184936586667870765989567196996669131290646743220015409091264442025514580103271562270751870857673215468689857080653852505055578263216046332899546086419616175909799756713447161230694360031426424005131196398745800739801808291372627762276180190835679856296441011896080535179766428623160837750754480488047906364763616383963816219981820352351910996132550724117592420519745686595577229160741010496845458146002852118116738258977161374502302992421715021136608172834042986658032114967946812283594633110455099597641264661705379148582415000463361367799303794990247719959966398393809789153004744509683019918407013161901878707989516351995377535621366976829726638715602045888508059592329762359100392007216737845543453109524892128713005852035124974710339275618529514996899261009483755435821043259662158383902838118690360796490882712038786692262765030263465390938715269690481722807255590358847655761207245755485303790384502048489817306990365386623320781613924768108588118520885333909469641518302223276839002202943130671574589636599676108203233553436964325322890616892467530586875867364004895749587890040639291089023591482269400437802438893336312941989126697078452016867678390982671088935908073085224730728596493090322265118368750976280115525178142711698441487889324702954735297243970561579738636341252945391995454348930431464239843365690650654215652520162232705027580077923971339456959018314113479824481911156029044678066844646511623691998190787994189957596621641285449588010289195478939908772238249455006803383966439515261009673164774286357256503157893422868133257949659044630837182777205616491786577052174640083707540124356010930916725685578145262128104337689901365991295017632108084103525296921423091729860764840586299411919021484973012223877768528723096847503931282315611547794501004182735295094943879394944750757816850669913521577775267092289802556696360648310755741415381469150126966014085051977687906377442638019707770257228360063813461813236506062987667236208097813576342743204876003291359264048705550916949074582194161750950096318751257683349241220828518310894915899
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 56 of the certificate chain of a 3,883-digit prime (240 intermediate primes).

Certified number3,883-digit prime
Certificatedownload
Certificate chainshow step 56 of 240

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000008799243279 --detail 2 --decimal
curl
curl -s 'https://factordb.com:4059/rpc' -H 'Content-Type: application/json' -d '{"jsonrpc":"2.0","id":1,"method":"get_number","params":{"target":{"id":1100000008799243279},"decimal":true,"detail":2}}'