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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 #1100000009060721911 2,479 digits created 2026-08-09

Value

4418194871132515823670498813129285329126623591940495758930596071711890438341807218188679076384105085522000873121208174951607789530734809563110021655633376359941944724017912467637263712090243301731924668557428657609844156303938345233986133006189111002192035837049449824076169396053627328092718026663252028056711149984190343403136085403902577071598902946258548446537042009656351352709176919117752788407479977918759181026517525651773645840761965651517555688817817804259709009023628768442858920308281912668035421558935516085808498369612463985687236719296214735035051589787105916973813236836684407928692516306021297399589140839600538667204402288374193134017067061693784020108712566810166021190093297116757262597967822535764651150568635600396378602328883635254344717687206637535659405757802324201008926649522141610755695392581525193479943748638048115842494443482320970494446154557169685554690348100937346717057717859069467552339019214243380991894404025667431072044644838010741631977339054012873036844091070382673448683439776586124160164000539108399745228597101618732992894192659611055215315729597208515657372595085405266687176362100776441054176174995634323650269919617906869107475216369197131572425073184725260051784812427063703634993765617663777146073429725918021846624627142251585334122845515859911786048942903606721812254966837873813480503468837011374122449692200355151120298629085443421216679770517364665901841255694977687467787182321910441580596146195331860463429015323873856648696455278913334867309728867548755711938039157700435166878217437584185215705451917987928930928562070529889552462372618243987691223019139895933018308312340720542416263006752062056280870312958792680150813324516455587951541871248145519866159060302660048069932863112212276393015694438823620848294703916446610712797076911906726484224263422841216963728264540927920046428149392941236005717647290004600094095101455929615964073145173667075619573240472340819964802902897538108866441730920364544633676124121836036629240007253663360272566212597063904591531644769341909246234809774157348191502005306479320861874247402899625962164665150198584171385774723145061944108570397826872520512254632321791640458505263640630927653367140262327320653972870265589737886557063086397594248777222841507562425764139383715385412045304897804759625713132902560615635927271253584484227665407485367082479410404273377912069838439315725926801463073023267227915505507283871324910938959415228886027710699676987969490027414895978946616094974387
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 8 of the certificate chain of a 2,557-digit prime (187 intermediate primes).

Certified number2,557-digit prime
Certificatedownload
Certificate chainshow step 8 of 187

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009060721911 --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":1100000009060721911},"decimal":true,"detail":2}}'