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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 #1100000009065128826 1,797 digits created 2026-08-09

Value

407381377321157367814475531123016012674402845003648668461895662632982995740055781380088374205713727655766205240566457841818098382419193342323070437643278879357028767616996621700769933790243450067571357894027873743506654653907238764715503759286838754110910036460967956930111113438733080408941384428899794809960037955806362909447892469610856224562737354357783608584812650118186461479611587317035968618633467947957650525572937353305345446864343442693503209411972756581935578660584737215935894396032008203758064678495782343743736548066633981145728167927701562588233399258161163149539710560586551380499589421945891612544594163819340877447766419495055043748583046276572560386784640346710593436115998239173782182263296276518076749728105551978404250767498119906928114732948668208091227647781204953729051892168195660586429514007143065939403126063858782241098260211442893601814614984130779259789025649151218034159408185612548506214047383218076695750560373697342848896606528662792767930593531065276290786685556553328137325350735464555032034245260425835712141821925182697552085789025061241196700602270033359977380648540170365372491676310796583705128060739646319505802945126508439089928171731677367498406943748973970530777485204223749623932640790621166249506533767120977827760734052232354633639097804854317941219592971503102661296539762034827617145506402987134060838783567285748546607329950686441974076043005561067211496635818033719316406395793582312790272250988011902797396975358470553753389493154435716960736986866590889269918675885845574162017566393366682212303642220979980893362990654051936402700062400930397762641708004276028788462068148493535756899691171249572840292820766317702196894055070561327369316580187896854467728611804209481927119008987757740041874007538124778228131765805351731391928855598585673
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 53 of the certificate chain of a 2,485-digit prime (189 intermediate primes).

Certified number2,485-digit prime
Certificatedownload
Certificate chainshow step 53 of 189

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009065128826 --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":1100000009065128826},"decimal":true,"detail":2}}'