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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 #1100000009053443985 1,910 digits created 2026-08-07

Value

64129315531961131558917215380403466113266748351137152563277315951012127922140712008007902904789743912867577090344512373977227215059243410814868570400871530592847888785375575937703512546645003628759904303161808732229846769297504851599320409750669412295818345562838885780160562092386860727627014978781489839759463114277741424788933043105235676652464403967486064382089733147197104247278652472864712175733809858564453700954156793448706551940054053361294785001815387653492013448344705855489134123157289474197149016578340891624372142785696244055412802910621119760642059581053160635254013863244625390981305098139568296115439756589200306684331638929563212837216980746779964662302821781812133007422477769267996156429617022266064602178007322077418194503912949250025281328953452605643777724270050218576777355431826255625803552438365156876556145639333736110915492179888603268378072588254884716394441076367405210565370493735613629640594825516304084684326710197452111009404607275587173367012594224927468673836652793739532477621457816543950171689493333473820357795364121184853558951447280356625679297471976684408085048081780665640992686122146838227275042197791471073662072593629881648697817012497292336223061249953551886828289763479734358606468999392008654878806517760069628058192525941467421647262052029971249884083529647333706111241390674864573962253918315125233748922202638703531356071548411590945728038220680021356209087850116304761581979105329342943551905143390729889153592831626423368332307018547097861398746716755185965167206869351787360303512278077583252513537028771125787733001777256308617067712366755988186178609971373136610610647059817852056532980815454733576274221879485659235796502475409556293970658105857193856659080299795748263246786169987132584056831554692135092307195619443470350597004355772758586216724064660231474954185038461275456650781804785435171973139067548643273895383156847092081564486806768061201283
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 75 of the certificate chain of a 2,853-digit prime (221 intermediate primes).

Certified number2,853-digit prime
Certificatedownload
Certificate chainshow step 75 of 221

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009053443985 --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":1100000009053443985},"decimal":true,"detail":2}}'