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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 #1100000009070776876 2,358 digits created 2026-08-10

Value

278934265130937987041989127908471598804226574213708785928114198206719834069895166067773766166093879231383022055894706240386427001393641278106841717839173199962296068785355988832021454702209484777244217194609302602016459037808216263400372970002370125300513031487276437306176923356400006496505304233983827610262424017178318372602578385614414877127400477505082528224092984232508233334324703398888014331645514884541252284732853226543352190482337932530860504670548012909281302576639291507880616437618621058967542210385154825154399584280072007438804268507657342032606858578297259702955629723144816775027055041937707488921337584151405426771616172022242408315253946187860708490970767728568915752074102679664523070674558078271932634244777773410914873567562256059393103632157272049407135494378470937947530206693372968751272218447574088326272944953935324008701465287579553798500060220126459119328909222049235344798849459942979147983784439887616894274646248087984404718564230442598498168410074955146419060930522307670078501568548088489713067025854913367666019114420772120375973996394317037217017024871177555559699330613006142727703898764655511877319985120803435661543467376301274441178284611810821564889571687033604619653447710583134148472260901344624020980621244681366218803281545181740239204587618405773367302491689949604485103628504734282806170805983857195536114739632030541903209317820879952534238187436779275434358395316707229543835372751681579989238714086387908182325830920147627542285430742237854071553776865537865972481290022690625002052219200380690539547854771245731208277969495090920449869509175849274330759432155465810083615137629757997276380308433678456736840725453391870669443691687852672962202052075124622224087601241631491857857816157800917562475440754802972215508660511054497198948276701227863931157395839599982817975234104725161566164996515450702338354160587385369832498412506854978532060649670560999153316457209960271799409621896778910473882147774900646760568322571892870354002824774348436673378366438731703075320177953428729086479529106676935613835146124267209865982402750758170755168942460654993650894697725288014701236002701444223809758818832444568945531316021832394907398428341675659697691437955364627229153725185069649842410973232627362097020319350637076716587937338471840266516069402755308674093061815454262508047659623865221892336892237375576613
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 11 of the certificate chain of a 2,499-digit prime (194 intermediate primes).

Certified number2,499-digit prime
Certificatedownload
Certificate chainshow step 11 of 194

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009070776876 --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":1100000009070776876},"decimal":true,"detail":2}}'