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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 #1100000009063550505 1,908 digits created 2026-08-09

Value

887045240617234312678903465809638013470704833217131707721136385757628526068161177872206387114102141251745583449548136448828672167077423795685122395277135901488898966825220769369569130859192352681636895521985461404357839586887287991402443403424803063301007463216163733155635600453182852120352312752760736972672591623997493377926529696060165811819161617359191918483112360672465337963030244128914642160896355977692052510636379315155937054520563027778435566555122923697389092769355830960867842115364153421041363652270500735490884068719782534257738687309197638241263948528081608530365700463382502490292343402816207960226440078215696624623793808346621763718367871239383472858505070840226813543615083129058035414554277905928204659328978851206930617963993827866601549469313201785523941203464345788526513602854695545164644396486552439698966649774980373365639944957340990875139098530863582663849227320972126469593195985390798938528839713963282591846953459796668044129567843287676862207108338042325232771652377212541934268122876565600656327543215313734771744029182664161936254192663234187620926906392705364001252822588611615902586556076678903938755581568867551709126853373495073000672453606483365818836201264022512688260864322830569215738296922505740496540204667715826091974628451828795494521509050630614441335910822370973245377341276881788609969862507895633477427796190190116497830527335699931075841118835268227566534616637285354666470335883720167685841920067323612236323405464978660729858145343019178721629299310972109615029493138789208852291180920201378328725374100558382226840327654276313912794829003189704162389927058000856810314639125199038581069420230174756847114856347229735793566505519358154729503208054903775888858385559234018380653339015338886523925268091357627600292962192350736556334532433840543639072953938615022915131842309873464232793281107780532634226492747875622989991204520760101264395097764596802021
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 52 of the certificate chain of a 2,626-digit prime (196 intermediate primes).

Certified number2,626-digit prime
Certificatedownload
Certificate chainshow step 52 of 196

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009063550505 --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":1100000009063550505},"decimal":true,"detail":2}}'