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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 #1100000009078839712 1,811 digits created 2026-08-12

Value

87201954362170816847323074223678959939170521353089401785760254573331252712862737791332015342110011442492263005978807136166344976601891809542251749767317850473472878908686789476426799192279443129214863628649239376570606458371890783022403289818139710794671797648741158060475559580953181580013978144465443999187891575514519390403537132527829416019213115430498326076970123798106687071953306666262685394104679780469713609890583557979343257688117038124588805051277271545154700975615442570225446147262719746009312920749013935182256363162630704582439879449980909591399167522014496191733719467717096708013138523147964561702005461479747195126013606220974070436370127583058949384096924152861224961858846725196352364037704949726768081467630181597955295681232112145601904116887793296071297622934039245152443853018740828252681138765187993667996527333769594904225268142986284221222380138261561382444066782727651571742414768016832379141167149544821568061989229547995519033811163037160517905862454729558559055037560601893410744316886038650616917191412283663291779981274050707185720065879556148272684547834994222891727385602074178088560829517199825998900368067606444419284890233691849390442709162574862532465055377567847014690442917403232291345346126659441627913071641240987901669713571474315105708687575287074754930327767795027802872933883301909828669108275804914136763844617560637675623706561539813805716568558164984947094267644106008066188485656169524979782838165590893335577756516462803111062478946191235771781008121771436161021188252576265016816253392224268038084981565746650714891763303075811970831343211092500092946231103206864911703803348732986738817235435817650760274864823143908695188857144962706604355022335346230891858107391568148318157014029155037463138264306531142899488815140227418842084529622613261478948243260559
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 4 of the certificate chain of a 1,840-digit prime (149 intermediate primes).

Certified number1,840-digit prime
Certificatedownload
Certificate chainshow step 4 of 149

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009078839712 --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":1100000009078839712},"decimal":true,"detail":2}}'