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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 #1100000008787269977 1,744 digits created 2026-05-03

Value

3948968070376548646017602831071853680371996068674815508070989979221951483754034265747910965896007860592043823446365115189051897282130794814782374850403980303789906823928614960341159749989926500294915736123051720683575505598804756253271989263616438302920619107375696148025974393544237056701427784652324177413192908949002881145546295871545133249817499686551554271754063917778402182347852399446051120672493494658806882027567053113943613758561279233524693868511189077034866848736521913386784642974538426561382694809921288770873226261782565126385405056111573486504694793326165098563158565426467450387473899507186659581959908027313974647103452357834964933624947306458410492111905335878011255121733484945879190620814699412203325483087011526742313360062101274069372302674561448105655553002354747883463567718834424264303882182162113171357230092765030039671902095574732439542355927229970162251312111665593560766796478358474478810696737243900223521423784217342754431880831186053391004538722726227936325017320075169899763478195236043415576502054118362679709138191564012562789737664404764591432548815032515816174984458880561372934883110707483344584882521748058498388261754691840436658673485386331822606201062920570448620367402037856508286852417356964149020757979464649620177006706091767501721088988301827528483817163248332165299455255577161656256726026380825785623710647177604527742326209891156096051568633954675544921925222854915199650440685875886088712670386327862628369606839766331014643278144808604647133373233929185418832513309404705218188082363191886130731037633662102078343380787331473693099943740892068055985874076347387724836474327880542111340713520361619584538135989665382299680189912225955953569038227659534872951202095241043021779632121590523777
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 93 of the certificate chain of a 3,147-digit prime (192 intermediate primes).

Certified number3,147-digit prime
Certificatedownload
Certificate chainshow step 93 of 192

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000008787269977 --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":1100000008787269977},"decimal":true,"detail":2}}'