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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 #1100000009060931238 2,427 digits created 2026-08-09

Value

201987252736846427284167324084555130439566848071929708451643743629075567880887937273998347797152311065487282752603724840626626486246806952045348986971765973698416017035606930213191838773640262354059983129510327736345216263730795061655577298577619947931438109317199938223276937068249186079162635602497379750349945135031091709943917361686245980449112416731784287488840394408343463172061380965554501288877513793467342767561246578864686490780741735803457262163722397704085552650123344508645703121429103538534192168310707611869167381338661582567791396521591527950432084378345407804057329449077650732864617822874890851856382677788298616051535620593227435630567553612372074815961475666194503844716282844563785444271459986537471657879122967962885906628191668894586444649994032241013043363105061047651813057351046886437533788842057162417159748217768638294118039091601900202054934418386491431796356374647722371695314371399412636916302189858997228671996840221144059610264827749143940055064158745492267160610825016169766346173941486538591772258203028266920979476361042899735018655120427477584931814366429587077011742010058163841620970020391839501709950277060706878669956029553583009069742957316986332876751907712089022097773457228446350141011961094287130061753866334288462816061803668775089781699197100292721075745186386067223747169972208701045704745517925857102327246606723118048150092259011005684990921064015594524700718265551548117794230277399794154527122083976044591083285218880453673571733051933566110182010425835607474940702673692071187505607374120642803704750309530852692704453368453395827540236132461929087216670276567540276525746239540482682757562945960419792447728904260048350704427410222748503046270065116881645894825043982000886163246658832999623309369612232925654398635399423270600187667669698533937070060333523940481819299882771696726626435283715984165500529272249662474083962802459844689066792549512212765387100370054684422842397135367094501306176967060843856563184171300970547790681465601999240231770018126367838327956003895998172260202335413467266724141329677752981476476070233682014899479648261900875108580070696282025320309243064995773164989831280692618626064483434908665322579299609311227170899277002025017048041887827804067453908611806416754918268883966434064366026440187565741171607052586246289903365770098768082951251279141730485060199914343379858500297957048508119796393741362895376507332498532388642898122400641323
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 5 of the certificate chain of a 2,465-digit prime (202 intermediate primes).

Certified number2,465-digit prime
Certificatedownload
Certificate chainshow step 5 of 202

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009060931238 --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":1100000009060931238},"decimal":true,"detail":2}}'