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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 #1100000009061621055 1,269 digits created 2026-08-09

Value

842445680852059183472272977719430664158420184682375511763698113276665308451308058367193836812125356769334725340272762287223187295055598413005131486483156460308669773400252560197544789966725675995799326332372486265403927215704635974502434682794056366799397150212061531993917896156316910616749113452502453617594898280269174993506789098946782622866342729239461720720084107287170041582928317909320218805235427037627174584156573961849588741980200041108454829405258518704161121099687533004731342778538909315820341869607820209114429647987628724029697076336773503440495874277896256442209374508524431118664599013287902671430079406983195036068201228835518932026732653142458125699249342523561787489750720177927871273928848227927610876005000087648767077444727683064796004981632025712187026853972685800865424869074327588969472791882254061156366274208740797584724417957874619240295132070118727405593076991485266943185124816268618909181294475157236976445061255916555251199333225991598184784894824124798724845561171558784016020051982152594429002323549686756422029868553260968616034912657604844537195606288256408652708415297505445986322825706920352101252954827571600187014396544273171821860304439693558401183961820670131381797345121159228582792394697036047098643945134791632447393347591
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 96 of the certificate chain of a 2,562-digit prime (190 intermediate primes).

Certified number2,562-digit prime
Certificatedownload
Certificate chainshow step 96 of 190

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009061621055 --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":1100000009061621055},"decimal":true,"detail":2}}'