factordbrpc · fdb
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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 #1100000009066301821 1,205 digits created 2026-08-10

Value

21124885404164547506370463900940975020983083110278667408455472182411702343058189723211617291117669593113990109518725049397022369165403140912855250888983157499795056371119951121357684871528274366678044380464860418294888584048109746448020734220244816004749653196472401708179870422907953682272927539416022582676148351727465262141366487134686079503748816449311271344376347111669877788974397566980345672933897095068896830081056220284014254933366724150355204408096363540084892070456840794580851260713812142449396632216122690966090663611968448399689331814468178672088435560065647836844790913383286924976256260457149733213191879465333076031318052761323054398323138191657177480678744099435615964209492087328927351980500459902036183583468014205038354499044692296352000072966446343442641862082498850722283809319094463748827437965259295183067130798065571134802327975895416727476193578580655379733812960990371638798916834517294736087286379206493052194614644372974177824458520765962883191967523319923359455354186070587830685349862767223760412547985794918947400512988241022251237857008003218801869461291646467706971479616947020886238002383743300701624933774300312984579525827212181817655992639016081102286600399995284101
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 94 of the certificate chain of a 2,399-digit prime (184 intermediate primes).

Certified number2,399-digit prime
Certificatedownload
Certificate chainshow step 94 of 184

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009066301821 --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":1100000009066301821},"decimal":true,"detail":2}}'