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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 #1100000009055703005 1,223 digits created 2026-08-08

Value

15953021219373618239180510414095992439697346676909367168977915270706157242273549861270252407842261600200045320047928481130042890269277790976823354881155530629353688922495896042953776703721264368007815001794765533960279098221578463877638699877373822846706905530411718002100885202176363435625008857177185682946056634443442774789443355516425462830357716469983643849488355380449441949826635021829603569714138946471919132775158566950563976050610931513099517767391643246659167710212047425352605680738990358688106499874887738422773526560269351632335474632041624299554242954828976955930740181291120889216931139380620834317316188542691179818992110564810432736564283043844692136377328502572226835045100044969679351686152243113510644362624000388193123662962000701394567253490809776934921001368993786195766009961743242478297025387978963740884483112611934282036469591620681472738487613138183901557136356796000087008065923892469934165855448172831243660419110599895261123193892195367345221586824078674426595368288919124757670503190208385090137450912122178044143970761095041244489868115941923499070598692725955218871814623096376893447148522215018293436186587727836635431695617326726390645089934124659406750635953945691709249128033119203663
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 79 of the certificate chain of a 2,229-digit prime (170 intermediate primes).

Certified number2,229-digit prime
Certificatedownload
Certificate chainshow step 79 of 170

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009055703005 --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":1100000009055703005},"decimal":true,"detail":2}}'