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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 #1100000009078667515 1,756 digits created 2026-08-12

Value

1298746884965083461029585334874089894914106945115456930024988713283469389698695975885058843104489987625282400371512204973814028144746672301312840971240570950857130754053590940898956825901558001536807025507466953443259630812608869090411339395868180625974160888495235728269143156804968073668815953684908243355324257210704912955988483940095017800977805710153454826840980100643680141104528558507769581012159628447034432104940089954400419825364104545949459468819533224407600398955055069172409590496830899129819540743383827009870710578105018632805689061823311061704169409619720705773683685800974315822199573382744650529678172068254183330412347342584943251352490262949751686290884869116305181223695034017524221651902601429034028476359593108963939197335648359856132661351784259451629257942248793209854152968639398123215263055110188876002523166877668152191867255335920696279722439794894316575873474158077279580403026253116139478318805530480771835656060527299697081247626485856715845613061999896512273195972919590875814656335993383213649336964256151015680009886388577576136831553100738276871738309841901437300267806086795744725400774228813841738616864405400055824425450692255784151118805938762590515414869628754346770057914240779564796122546288552032082952274092110490708156622390448144951355731559454070517946186954961008053076921782672427710630575805249686793469531559695112063768108312932754517806926640238757557536215808378287919686946766715003568657936549073092820089963563061552329360801990663425326019017659876306791807472499184839562194578387259637831659171590856172631357748179660830841077176679641758010675293180819667288457025949372810981868290141669333652575297928020702617674561767388373640877705461295556843800099018521800307038675997565392873826127347
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 91 of the certificate chain of a 2,952-digit prime (218 intermediate primes).

Certified number2,952-digit prime
Certificatedownload
Certificate chainshow step 91 of 218

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009078667515 --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":1100000009078667515},"decimal":true,"detail":2}}'