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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 #1100000000696815721 1,964 digits created before Nov 2018

Value

13221733890035435241350382394142755214231743035255147948233109672376977832686824602470443850162346842387947748128653580903404123373070655645120292164480078751067181719893814054038796405254038374108187330660317965378326407339766827261369521055115788343311878775899842148601312532650236843705053245413524747895285934997145989152646225465268580203172403131904815346441835327006348494957822674011925542824396328887122444556249751528495514986018778353307351564187172252428943845743738023255143542896341460169511205637327066536856552158708915255902771157863916512437852741578310014484846059914336487078631794446087182477004195171235384744136003214403550341910355480244421226783891549543450355124643633884054237583729876566701684619746818948381262546704270297388216550836767879493727868109280400797370061058267044150985754361917646325967670945365750708930961780404332609298493914394378411688030224620903558576719711110627965102995888512721478046096101192171838464363367336440380185628776653561579204081613534518966827208638935367331838686447981261607475424342246039198343754142971515238846425341667678701614452222535446811319424678573899585546917712361063593528314548513732561145026910946566577484221992040525744122218330641212563585393561099142037809486166800644273522831736248970832682664395736208467804597631648527127004393991363647769738749144494690918016795340173328420044325600244258952281636339303600969894070190519300657489490949849819203221981485605516929768160117594757877061379658744204153186412168313567313951666972190205493922915908614387382298638550128967309586858820569855998134239404794836801008426549504594779956521082848439168252045901967889635978418073106551071347235899328901705443830069512577204063970259540805143715847881457403120055286668641474142655772244024813850939816316198411099793410306771573423080162212171853007138655269588941353235777308130097073186953569766960878818875203422208868329791495486022995019656115342091392709075340202876499721
term (55^1129+1)/56
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Is factor of

Primality

N-1 primality proofproven prime

Proven by a Pocklington (N-1) test, base 19.

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000000696815721 --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":1100000000696815721},"decimal":true,"detail":2}}'