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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 #1100000008668726770 4,044 digits created 2026-03-06

Value

128170152613139519456666971801165362100739108982633389384781036351437470910478596175547404575763343230320994413083164214825488525457980936139278825691604278792904069884427099474635489173561487516864270473689020445704511925990211903234949705151498919481995934416527249888315971043139917266371259907503146431773659898996407464986706881062730807540395044516828895693446599974534961737438156128959364654669724513297479515560112094854135745496828424716253095843101748121689237511868361913271668778174514765012768746317209447987275783714258173929100025994409372633051915331980917007464608665338668148971468869771947660382467633216973265972132043254824409125139258764832431270495631845296646852692365287631581004296613894596864426134917684006403381702445786756212362845842668272301869294978637054924545474314493530952529603945889125007845996740918423442829704130239368889265370698138366849166911064187169356524657404162238410818019851467505370749434989753913828754816083265761277972730197836692071152648386292907669724258440330492115988764413361603405795061137380559060873585774361743728441987644691489633992309552363735296025070666049476025912721247857806772361369258355495943146057963281768035510336892174014782493186722040508970974650216693645071791174621886374939381229524014819621611460045428886476575755222920852268432645436433504973289345287693312747499112568224912362404324554342033712439686880422653617274514582783733286003386659657052253385639977815041474915036809682991544916429897286981263811943551952593549971551112631316645422749400916243809224345000738957096140784338590332039825809968384115806797906383344274564540661690074814160919714206934977179224845124866892188957999655539469892440203600148445272196784788271158497681554187419096078973629427161144088536213287253690964243774185908433084238342150552756369697928746776146412841908790226217488358792203838023750636559242364516888698303872232763470264372957565476591501700655087286232665012505468356604974333606039750812659315014766961860876254994318757392379008816819344849508636938177598385610224896220015312963274691370316844010475839167542986122620986274717519007773611064021092697009069240438591627721178436917924581799462131539922918600252790211971515960246764069577560032456372563254239023150767187723456093730622572293080465303120166051596681147132233501473288185840545601576487196575390492385404682444105910105971888719423033068129347441421003254790769227272556684328746180387690953649235420927839867271377479986737997855800513651733683533220891253192355116884724923537037921384714528803891249004845114704925517549716490148865490709858441018611885721669099423685213980282517225690511224983266693813833186013590637636195290572745277266029254420404753659714442283618045276875360050864935422327523845389491640865797315759617186951107018772217336766585051555604326473245098615655794737894672153647942529216789897547713060908916883454880658948377668721832175212330664597261913882798817885588593073555194716989493100238419901188260319907567183653453030758725270008740255092428056827141860642118087854705020434787115548031692650058349745634803845358089755188447344544354983495584194280761998451173050977600140765960232666898837854076956675866911502881304879223855021245791090611995892937208821778412749630537622317598502862270223023893898678037179225248390555281300066870258582979022394870420773701981039145762058476259389632084143631949947555108836782234777382336095799497732413516463373600653526139305672547874701151690049987936471882926732174455996991884856258632323853734205545367147230994797997953727811830361292192643362841197746227737751404508113164160279251160661184700567439527657650935514430166814252083139632883338368955806826827804741274227196194404145322814119186438331948026512496363371642795757008523037155373400930106548398704865250348148423430838202042768583395521968286422941735710850301257347217258278558121285115931855672936483988741509932956250969028385885003280594090691502948693627318568847986272330348280040492784739584686110712905957328599850792352398516863
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 200 of the certificate chain of a 6,995-digit prime (463 intermediate primes).

Certified number6,995-digit prime
Certificatedownload
Certificate chainshow step 200 of 463

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000008668726770 --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":1100000008668726770},"decimal":true,"detail":2}}'