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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 #1100000009055621713 1,873 digits created 2026-08-08

Value

1189373096738778160363636748598648538935994467030118756263077524777606446450192236456635029168857310659530974666839473467148243606747733370739333261672316174508367525167549236356321825441226941549090842596766433386073275477451894044991809917885334059173251912523594607713763024421642169482389570113479907571404942751776051492749454274063596916932848340418452098162645841645753365113737953877501081361241584888849105327388226909839004841858537850509915858103885358990263061045923253288742643971348267052485255426223937572177961346281597668112511300610200848355215102368586015663289527110152782579285784757486849784396931839748102508749731776492291418017894562839921257133526229718277121132780292569129108635312462145399694418569114992733565312126830007694690413713315799806813113521281968326640703863536966788648575798781628251847177328363722937283541778601351333292441480733609922943677232915794524120819026408647778852562994557875636726223657128600522482272914108528779906116762201411814720102180883475921315372558811902743958430894810596121659464528449387723489289112578431072717462282403537669824013538277884174091518685977706939296286549260423242036748794247751287566791070183477768510612439336310154172428062198476611041407022205761273947823789741851181471280122258148324911556564093269774685768025642918768117722718271354441905753377918867087655576138732440392625846591458848531893155816787519642746735661788434555459786619594773577036927361933422672815720579691782091260197426445695585975825858206017420823342872915575368990903491643353822466213662142100319347455698918861622835278318940158724875447813442931478448627481419405100901624057577824689774219216943452297026788761417930074938450216394914853297100459573277171104188601734693537966560920067184533960878546291223883338535978353497913924697727997115001228076321246912775888342742153758280713192134709833421327
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 42 of the certificate chain of a 2,423-digit prime (186 intermediate primes).

Certified number2,423-digit prime
Certificatedownload
Certificate chainshow step 42 of 186

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009055621713 --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":1100000009055621713},"decimal":true,"detail":2}}'