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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 #1100000008676271687 2,710 digits created 2026-03-10

Value

1427561262855849796676609328450690265653749983732842352403682059567564420580861284938630430107442026874127714602533791915850041687845782203831137595682082719419907296361300364997808444219666046490793983516579323057289504929249594782421100044366197032593143241836966206657720037508744962007448269086426905121791372466860605010866540730316746578060613134580807289126759522301042021893298107785883824591574660216831561703320754238964155883540262839141141592470163576575265349159361940276382800516214382256675383254979389018668574068044554836604732630712058011577555284834287048492342532484628957808100208727833709760617964443967396835131714780650984404706041436962286474479201480638762758881974131062735695211928433415920605079014312426557852766703651768626318740087773031938536335637015381163204262303561384581356622568947887043786143127257622362373665544831810741509613496527007844232537110670644602407179171210951561271657087032280948062540079288369222081957262330995282444758955897685916942432786557030308244133997571279263229409003076834096978651858533990741086831921444081605157835536295532061362421976846278606322475844565171153454390517798437574707246736582141744400844175572886793240673338628465634681629927063129376404044297350919009558256581070488366160789101694635186094529489476807375542625411161354088644602420673719141469334063836819288316644343349627769173887904881983121824447788391039285563760095449275325587172948678923791486066224590211752548867325620391437883724649001998720648364011178578735664054809200635041467421202141750621535905588465226391550753540657798923023702246130583613898366101023484995656408705713660437125012937275475045079180308530287385906826734419080361093151357216810317211900665372089537897757060772436185354454365632410453281683126886853734311962695300210226325930888935643691622567047624457593655014758017224286727511816706990718060988150724076741341573227787922801015886762934364575985029988948494782039501032050044264430272910739246585175138469852508648175537045287935908252079374883250116701355729065806731318582318749810793858670770281876333279404330962439315363445910670241855194936821356671236140431268145804542567779038572182605564803945778749040942799105641952177854032109186517897136261021292147118303969013749986711894617069025038593951335606355221790605133391250509205873383134184997621577341852139967457557821892897698038577502099367502772961121251447035422312558989086613112708057916749649872331122748258046142294823261153644367935992230449063320386894295587155112393651381535875050466825611159158950916894274225413595382028903817990724770161097346536256087457677442905159417719058729201662053122370115440373877825084918718380763382612830703404490407088449
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 17 of the certificate chain of a 2,915-digit prime (222 intermediate primes).

Certified number2,915-digit prime
Certificatedownload
Certificate chainshow step 17 of 222

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000008676271687 --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":1100000008676271687},"decimal":true,"detail":2}}'