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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 #1100000009054641361 1,688 digits created 2026-08-08

Value

28142742670732531198764292123225443541202468275933143034084249128461876599089189128209146415281359240013386621044744881472960828764851997639758251309861899309038622862545542153902797456508034394914454394502354773537765371096058688529148795760243490654346161657631538515951053388691942282911575289605120305748863084540609482155961491671128764433313267033301080928583352357703068897887088153314364802705470213186578844758738416465766675520891793804231347104372950227052396875827900493035241157327152576427157036696540803904670653422099172272608409716072915343977614606480451074169423909746811200896797304105767756088908081958721424144405974045977466121896919990395747659322499089249911403612564875102956504201098223046003672906702302358080517465456020022862175362589636343178422676958969584792002365398423399237676142614730524165948014578760508097632140786909135671504095348908930381046842773779591722003346858876384376110386151844241482496661872558999137389534648793327653957374262151692076942601968676297100803933246861200361280433840261586500695720234624645762270257151807300146605302451835648990159672549388552420614433478396695325176043395653612598626994110611705087632704797230599889189213525055950843245439303286211981227548040732937784837010574677430958266462533838640066466096432322956650000671070174082194994912055899943946679562062018202222084694313066271772062045485815823594811633631646506927769990719070262717919492616143086982702974198625392934248934515042788138544350197202960472470657275127458476739399357932290739340623431189324733134422265004174468479910130079540298589125445627152748324701263823980073348551810081343277197709753162071633250291692340856014470221732693121
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 62 of the certificate chain of a 2,415-digit prime (186 intermediate primes).

Certified number2,415-digit prime
Certificatedownload
Certificate chainshow step 62 of 186

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009054641361 --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":1100000009054641361},"decimal":true,"detail":2}}'