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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 #1100000009048439487 1,468 digits created 2026-08-05

Value

1121837871067208621785930255199145418750818680049472602260420407370716607506303633498994002456761945121954389192061096809253263560987744440631499187981407760712832520143953995613830951987987799339579904830110887464156209479844828698300386538116934813597580893428980249290285547673684119395082938226266732178734048896899925264415653389340927323767260222066944455095091992731603616450838892932373924306495951774683318027108312426051266080989884815574358298724752460152542161302735287722575911885931046640942509965224052876873834504919101118661142945469185798804309372756137589366513464094110952462922697921640613810947585148096505090187351617958212089108888184537545187692267417995867398741866384903255296314967586457810718509468407426348203298477682889227896539487124624797964409269701143636762545289466858941623848838462197972190918836699344432909441697305339864815120693608428073984188127775249716119665788945610087721240469210160232143660542100104461831594332356056141531089106278810457233687788133838381682442452948854197671999148003330296648451412186306712019428908179463580097186999130281089953938439724920633577498412180301405079135500911469670963040087591045140642825062457938323985444845000153844698461199813911011087672872149999579636082462037169191702392592319986310791045472591627363039150581715547510650937309727506490349957363133459063066681986866666254962460840355485605615134673012587907847580419119544947935505252973760559359038684391379193938642380807
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 3 of the certificate chain of a 1,491-digit prime (125 intermediate primes).

Certified number1,491-digit prime
Certificatedownload
Certificate chainshow step 3 of 125

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009048439487 --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":1100000009048439487},"decimal":true,"detail":2}}'