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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 #1100000009117856228 2,391 digits created 2026-08-28

Value

568751666004301167482585760857334152433942901224763723464474080899204676153473911099669492043311887626142778073755292059772109536711119216312148996730078474715238690408098145981392246300546397952018232442056856878784918450546258332470579060614107988927876317926089650140451000697895489799520336276062118937021769258377506539363382413678414852466293569272646842921704415338296919637834809966687924108532830844774953612636801165036412809687771432385026100699734487130594696997539173213912374098134779965872849950203370300678371231483365580639619062257711353687122178618865494197922455019763353562328337477918253044193021335291820614251065867689729521896137256560315231332912712223039219197682334607246181761836391490493503149119562474783213053142736749264996799314909679833597625724602300432610592403193691120918732501588481186556204905350321627566675032451677079134844861383994690799723734132262180518600877822728688898117957934307006573316528217189257016408539231424201353806098653391829571499792356999396324446571939493022531328786459255620039764750255955285309455023028980689759392802168904122365737790890720622451700108359860779378922141199179842327736534248134642157190257591169830244174564045536950462814330319565391861727181672182774133498847801240363161405246591663255929774375069225965528639296869333150256058612514277269767348228999412470232764915269243137681234357653697959898707094078350937588479814548259903392438225558644211049165928452644216783634271627313555198449650662363889989691507799137186663882211265943307884318269272548401791079758753398216044084209879535633574801446589062495876452056903792045392353950115528755017008103495747100292527105476655807090941003474243349544572365147486527328274146316407476331180047281503614590943840880812305459704710578286050515846887960045427274077631455988474106404141388239187943651658519965309520208128916490623745065099515334215623135454330721200027549679967608603677182161260744135455376071699636272583048543175617957521547314889834343895629901899050667020888244565291449756148546380736344314046308013277742625882249067956282066376217526232696285302948461597319439130832218276971119300111205771942776021053825461545442403739990916159131892771417995846755747673326387440441272552222980778951526698723947584951505023226271298100283228911350572538581310726570957494225308397620217035381987234613987280115295724480437099946372448747519
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 70 of the certificate chain of a 3,049-digit prime (315 intermediate primes).

Certified number3,049-digit prime
Certificatedownload
Certificate chainshow step 70 of 315

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009117856228 --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":1100000009117856228},"decimal":true,"detail":2}}'