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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 #1100000009055505883 1,547 digits created 2026-08-08

Value

25237720181509656476945257623351247386212038752671669720223007550286880850266263182690749850998917504537788055750817114949354828967639346814174555069114314194274596939642416170733136931415057663823165190650963899509951389629004950861242168664789249159495584892538737422182638759071074582506659793060988299955631487025609870646727088878052848579108012916535670227234630587210291460279768235410232188968233731368123697652136107976805125198152032104489719526545326295865086615653863130975625855729080153001901827369415283727950720428238624715761894007032036687037680911026446444758243011241459303179439973101555599934583014831850376476026617280479035465854832345752718637816446268065651634841283680891460363065673570681994486686036559288533986913698949406927859370006018347397554917599471417907358455801560779435132173377428339468749505128646481418408236519633991799219155223451877425247468690452437685471169099774760276968673999879420675873782976910937428188310874660742657914764873695311916280959186534935831433562562163101147412790983850820378668940448817180754631868520444407329538898918524833104202659148399043793630540494197534966651596665573301330898265383478833204731470780887836381093700642115820835533018665853347968148304374186260673101527671885395929065751984118179291547400899152421304345249043622285023341397308789760119981515784713315469991480380707800899756540500377429322148214185391129351517519353521757852663412297787580415584210552782049680865106755377650512835632424921058513892053739457695814150957629331597441412519065364763551
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 57 of the certificate chain of a 2,227-digit prime (175 intermediate primes).

Certified number2,227-digit prime
Certificatedownload
Certificate chainshow step 57 of 175

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009055505883 --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":1100000009055505883},"decimal":true,"detail":2}}'