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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 #1100000009075739851 2,005 digits created 2026-08-11

Value

2471603580260812120914246920483656260869725420820969306010156953923892755974826236967492490435470722826530149473013542446636020803563103710387362115131245558275356187829716150136211026775673520290712965076438679735682127653688326444983975025515452957886329000763942727200786131782580935995280852165259141287589687725211290799372870108292141368562137539013841298630101525185521020750819956534027871775714704678989936499638067735412307270428663024188739320954848537117870506400368910382761428544494355238081244428085539952653233238625273303795445632268098177754243636643135554448220950424773351349428766596198373021526568135164340487625245201344129833496040253652074630496140761378518071702570716335000923103475641016844664892293034114985265990795898168853168123193820307852851823018881528975467942902283232782105675253914607927620456456627933033147129284042053902074008277374357180713876672355514805763923040122338180183274596514851028197399942315067902440267369680349966230879143869413641645408017567463725984140610491986358959503469995691471840680969413724069566821785531548501813750918816916021666308349880807028642050265180751608016138939378143241143968440917878711272550744056448917943496321037203740279906795036891371878797699861868030114824934197207585692335810395508097416198376857225558526649266244180272008457294312675546972084587149727658130301703967353994778978523602135784393556590338348440679678184576646725887732459497755255307635896265786524507121381520881184892126521965851620517129926781055923371728248913212361518114233569849135947281559229729579625071598909055834414697306401200970495601218103734376688049750164473513233441445132966993980143929457849172483918851584844383763283143514909470278152316054628808048670442257904986913473603586767719219195742485718465063977409613892755771452644776825504475177807411021609291052732415062187732276758964622922726371605660578700927591159275763780997464899134319986634253977682041534536087330856706729052330076397812587975814200160662798324765359
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 10 of the certificate chain of a 2,131-digit prime (159 intermediate primes).

Certified number2,131-digit prime
Certificatedownload
Certificate chainshow step 10 of 159

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009075739851 --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":1100000009075739851},"decimal":true,"detail":2}}'