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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 #1100000009123228149 2,298 digits created 2026-08-30

Value

986881250866325218083654709510754046390907718608020793721486460403653281476220923955612853712741686917605980735788703802850653162038535695987896979824359597886186574550721350805341087233829695548019080956835324302685262330214046047848251766193231740630920792487946066092025694339389025519548500081173153528773804957754210512308012959441356702318950901337113043482520875074246630458629848869737982353062418358667234154120378442466093539756454159185331018953259738695137792091424500125723101671622161629507458416002461365959076263291398504179822715778709598690393492201718624862414084557047836048732818531979889334689000607100526532859712314829611228664904161333788594942857937489931595992463338572078446576150540898332937364617795804157247923595715598983887669303367809744333932636614401675815720924723639083072621264248931159374905816218180413404150890243264673675570095984432845048234697688209665024301045503989048413150439327041825939188959906768934508271895150832590184814192280629102284861353239190812160889615981070549180741830313741613891444780870520626036493398146850124165617571499698413916896931109412419483059323085882475480614345458165336621801909648738767160823419663311310127331906538732688446361215122017321614080643852432355953758745933040427100938685505700012814351863145329753236874672156263429495992897432151193639345607228517940048365287457841131642395370832797870746525351643892807535295107982990182820206750666422266330556653822039244828549114174480125907706428746374832083380445355395591925286770660775898588962280193278993318034047657351463697182990822674006448185686277595486967884134343487227626665757103974275879629814627904921477397258518432248748109739119267151716962637908074642302572924571006976633631565010616885925740136753500274659164774316148629637292549509058656107504620787316579278262909459032232438080349884525180684247884292961529266685516429791738770557178370619944199023946174404338964714584195869510044789937674662547248731394038316848799684533680679406510098233260759312080864210746523874290523357276043813821733926648974987246654916169046731732469266231190839736443420358873065643821008784369050001417612723118864930024643799991634192030557567691296148302313022871645129446250551995314588724316097998975474046510741529908781252172744055579823379221880571
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 73 of the certificate chain of a 3,079-digit prime (311 intermediate primes).

Certified number3,079-digit prime
Certificatedownload
Certificate chainshow step 73 of 311

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009123228149 --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":1100000009123228149},"decimal":true,"detail":2}}'