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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 #1100000009090053490 1,107 digits created 2026-08-17

Value

173605091902612929090050510962961978878996311075334236173704321310535607442637660399225127088022014974487263600169355714171645936381892285548082516984388840206985098325546467553345746536741103181185555010699333478119949839909120616634553016482168768315775660244458969701468627002943268566510434338933466147628186848749024047129489060483622426603774814731286284062086217086356141454130848543680859223469816171682067869443146844197999293426260182189521731159923940629546135828146627050306534795552974857268938918000508542085725850363900305457709096792329713281925418524121420154917641476179365928996496138854410073127837096856573303346688469071564056775600833707339610138346760959495149344248827184274582268843981374012423499373642103630575256017913187195959012542206044683334468493237090762458484939583506514061584718262556542102526358922673370082856201668144856144137649323518971696678740153523657548585647113417092227220935831460975583716356254770533264291502410380741045706498088814960457024186960013258181807565111292434898232862776239584511143314137300383104497945271008138549506078277137718462793831397
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 73 of the certificate chain of a 1,998-digit prime (160 intermediate primes).

Certified number1,998-digit prime
Certificatedownload
Certificate chainshow step 73 of 160

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009090053490 --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":1100000009090053490},"decimal":true,"detail":2}}'