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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 #1100000009041828936 1,123 digits created 2026-08-03

Value

1243456547604950197269402110415918349672496692567425473098305593919721041882996589743312717721312751220709215249975051458191882189429230373134969754949065059160345325147307218694210422311729941235012735311223519808523492792173475957897227450064978900472593433763210615289678728586196287779550753981228382555202801531186773140564240781052685661159091107705183484565296548653438275534699641849198740972779608243900153987902827150021942970943577013216025124622174488313192089905009082424297723939582781825527388149226538959993076639852451583733717161674000504572466987888290393203975905878810897251981036266453877322911778879177663815945056407763281648393834725715922511201587119478260033806450233545513582798130831833075703152442061752466206619566258584174405644745430024776457772364928741533778152859415208690995214087865166777171741556548217389483262577998611471919860434285659431629532612324754404357474060315965369821910453864941392780482953507582340559627073420661554580839031118108423477239694802686678978518139469898867257213666652431734685044378307594128527687802934429230223842836832850175801272005844829762490417691
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 15 of the certificate chain of a 1,304-digit prime (109 intermediate primes).

Certified number1,304-digit prime
Certificatedownload
Certificate chainshow step 15 of 109

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009041828936 --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":1100000009041828936},"decimal":true,"detail":2}}'