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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 #1100000008678210707 1,087 digits created 2026-03-11

Value

7505395023080878661071343810928792825893164343419021900385768875716047457922710216622801695582992536636320247724293421647789875636801205110565325639744883871834222841099973362062633158778498256497633303002368108483950366462452823431497612630414262835857032893807108620941415988403431490732911132551878793715933936233644853099235310167057494995222155518525714673444202299343987550784610567365409861012230938474500913312464477570710821150186033073751996605381699067684299031085829433210547047863992281563410001163878278619002328222750851575189521592973934245689193886278790120247380963128913010859327186496895887750644974601864539108878859448859270049682615099019101171938933231339321499424347997345617236549314294250178754477622545999520847144441102253378095686534613996533764693437342710886283406823149026913242554394579145431008101585077344646733922498779451374381921394456395660119042476463075427158154680462480348882722086717693115631844457824381885746122577305231256912588316911823406227864838016390703746169915126014433689316204343992388649843981869437649729100312201703957142045487
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 72 of the certificate chain of a 1,843-digit prime (185 intermediate primes).

Certified number1,843-digit prime
Certificatedownload
Certificate chainshow step 72 of 185

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000008678210707 --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":1100000008678210707},"decimal":true,"detail":2}}'