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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 #1100000009056642440 2,200 digits created 2026-08-08

Value

1642724920922764192670260766484154488020330922681980901926493840059026696510724885438926309132093864025147614064260502537567543569305218064753267332044181051388896050616798939722937007425462402645084176944809687112567258570953975092663398862037141308450019489484122444774860940593510227835106104826383778395742266199714692635379892425615800128700087187623902426382884622851704724478585885666870889697948308303645769190989094653731048013333859701326310455641724027406104097625885087179346108842139735049436205794409003426139680048030160785666692525646014441341459719376329676105792702113891014160198578835832643307031255467162375605370472617014663128796312856863514476242913756925147204187661740869181413140267449158594571271522555115406493141566756735755805628227287834746227896234708586025043506446428797716672772109186902448456926096343059432559338046331021190825663080654937932354942797515216550270440393648039327197751873848151805535751841741612766262462136499188312585186739971324052949813024600276551849755222061819919049099963827478218923581442619633720046190680995693102470165059926754526959640292449932327491725107626860705342304709615588497978289094655757354379692948538798260338195952856225735030563166416011793111970719251258905368101507609081016773205464048313349682722469582899098000796325682491868708213416864967973145711046505709034206241948111525042474051943005930713603560620650468396697322212165398266301023739049339242315548922864765559835131464711851172058139267325341977731053533464050608474683401480498179989127589149442302519338532436041859245357265805798131457677009515709918014006894914655771847030917173559514388494275474320588549319210268197712563974467283740503205352593439048307647289620676434870188051392104647856642833462168660562557618654597731560278047825345806330957423142157106779748249926420459485557865438665351943574380661897194494544459249985779650008857503310768473766512859847166910810598805764052578437087264912903059685852658806190842461337857830820806456257191114479203476670435236573887476958858478541188561207246569265442100507962744790224356047236567517182692917579670060163912134976142316582479411864097859745282276335104224895815122671198250500187523
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 29 of the certificate chain of a 2,536-digit prime (201 intermediate primes).

Certified number2,536-digit prime
Certificatedownload
Certificate chainshow step 29 of 201

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009056642440 --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":1100000009056642440},"decimal":true,"detail":2}}'