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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 #1100000009055504856 2,212 digits created 2026-08-08

Value

4013507937096814849266204891387353616292032250272902707929725715445191171279696302672752522242858548689256866115284278049827967285400485771118298803842283256840788719811582169777737457858580835710876275500149376335883728503520391820114776532501310601691724779010625298636650946790645460698394809564372473433910843010703514985245279111776218303658172615698871417259676242192811753776674533676473169449569222181710342344078511164787919333685077874959605728215419171717787703888324039070173808673958903518601205616267666215840276853583425982237544591635636901856888219848242309365125727043676873435560593816677896489342343544232662938529324324495461649964045691934532821860888713213935924947534677704601720459100085761097763260510194734880465662481133830321451745497058878692850113148064455088749336866802716186268514196603903702965684278529183099019935529343214426288222670551445503360963016937908997779970388418255836626117345557391304825309451013320549124475083608574821334289901282520181720676090096568382237657843630898226722980070482617231357556554253269640818780516534853911852612265726454607473956375261942223039877298368175853013515813471230274875922442974417449805122050291768751057323937945382334713319643813815158495816637273389203161736799328142699797098275068022146085666557868922144858292813039729090743795802342738366935622065728141141147571196975404168822420918558235021118079675252087784364923169805119055002736751260299562520554549865121628048988605665170136211070780146820262524122187760141331629366119886032257969255991146042609204085744702970715984316154057355056036214131589455653180576293811548601721951767334033802916771388517445549714329234141130341557735066706851733683518954084186693031900077314759223131469882288141906104044521401761490285002798334142226526180014123849986694924562216277851974521148668449186098100534291232448685750070796647268285715105978156204918360356687685399452551371535263190734536548442550591324277574630188657972180534301347791154393129953778717375370322654027553950206005580565942255810688563313853163820069606166365398187091179352221232841081906628271716636361508055303046007570866387094534721698913993658076898100158161052224257925201770481332894371236846317
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 2 of the certificate chain of a 2,227-digit prime (175 intermediate primes).

Certified number2,227-digit prime
Certificatedownload
Certificate chainshow step 2 of 175

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009055504856 --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":1100000009055504856},"decimal":true,"detail":2}}'