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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 #1100000009055123448 1,569 digits created 2026-08-08

Value

228328904602280726068715444837864240454175050977228274449453978017315419320071375419439883325193463101412630672227549710646417126677328571030900982616946606888573344560199717842160976833830445718858862791609960586964427276732078664196657285159877988404872260773829585651251778078042068476190087798026806890923875282911050626548767979664927347332331517773583726364631817303579253317650366480232264655805355460245541065976945756362359398020153614074152379163397659533025432583597629527898577397506650716310276300105408747594503565302459276625386213279858156153592353751204818557625708923547921113141515260885620113272635741206982233831050286606814347668534230499844511485003318786056480799850872283944537735455001784439238197644586551333743588379360650468197113537066465183881214849206629758499377016338699484878501676067817793880116831311385441912946284216722265259244283075121432260884164162270721280345800354412594132090410094706164733552201069177968545999512909689053617107422147936211154880137823446130279033052651718650959925287570690428805000575574021609262568920870338899405963233606998938198895051644974834115857196836581969062192986955998843001657567230646409396911906025814245692529803725058330130750215626777463479475047174828904886865145297467027949417123361345354467105867922823994157204174147585189894191130217730645392965791564237597602240086787509133746410201530976470361463540970767807792329089572539197841472108327055377250887340863306329212800124501094834707652924262563305292230170383114326795437806264328260443596186547621160746545220445783830322051
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 71 of the certificate chain of a 2,419-digit prime (185 intermediate primes).

Certified number2,419-digit prime
Certificatedownload
Certificate chainshow step 71 of 185

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009055123448 --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":1100000009055123448},"decimal":true,"detail":2}}'