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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 #1100000009127304457 2,223 digits created 2026-09-01

Value

126252358048751602133460598739422711466120821908308635782579654212002291933477272054083759356644255624768784903382513721881367994051999128595402147190137959112183735312066421716629694497927769987552555070288815921546543165116027689111851483308351139941790022769812530718628628408840655522163902208719920917742479614051183763206942318810338592727853936093647457891988037277237563700731241931146087037407380303494062443904457229420727249968103654018546483201721329855893606288989729739476451766589454792152871155687219756836480934553061446343867544848429153570894854851547685704518912224170077683565755282259234074588678216498291067491755202083446680365166077315032327145230688880794709015640074634575725694058107874181591068666935793514925182155371660317443928128463783848667929203981017185630062790238675468144783912717392665239354733627455819947781134332704791777653231355919642536233139791047915128044941242530934565361627932638884427655227620263540645968914422787999384079717013997897311847928830085527089941912321760600975115598510376256964567132639761272101788780448625415185054329287750776340183982294865400056428718266888680921676194723680585266951121913942597947226792905403589299234155605755926713789388739344895246823202502288463625512672434368416241943385314471987745094995933998813644351353333954140840040151276878311121511301641406971587858831341427333358413404103313778570997273465481928956749435837308855839719182977079993482432767644168894391033783616058267954554574263505642238186140683301930042729413257000260410079081237216050496208041997921096507359543435615014595678921869377585325452297743038050242093616240183473718849223781026675614539195391579427576548114316573062283374146636874292018434078289930726210037459378437544666378131136408651962376264664293122135217024638904514936709195255932260087051139793674577477805214817390068143326262042066739517131436109048427979124543940985288586580268181686081859037823093056611759596272370064995814247680591186923570232416533714245903459361448520112242458702732033484347335543630336648907985772223643687252837345683030489141327181438117332104135033668960039688903566266192924749704281773768639011921893968250438654568293131543567974776529957436295693253475473
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 90 of the certificate chain of a 3,105-digit prime (328 intermediate primes).

Certified number3,105-digit prime
Certificatedownload
Certificate chainshow step 90 of 328

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009127304457 --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":1100000009127304457},"decimal":true,"detail":2}}'