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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 #1100000009080761451 1,994 digits created 2026-08-13

Value

27021559769397867803603251357294162909258665208024939026238507339431712565110104939369920915169635559100116300634342058927302433850349616522258138002707649767247574891379665279773242160016410624893472324265060035891255152380119429657568895525850060462624931684102248687398009147321639706022559100540795911782923332614675019883353436466153613338400317030920267087251147635991873268256097184596058163532726293390324237305459345197509759926348418263710139911608261860105768729162286315405498861132122934774735951587750458295781969614052941095994138605848681133064399305593293128453682685455221616921695303912733541775272268123155489838079855427454859196413118573298865236848493801131759324877662980054563104658905207430433519740286758583379211169669021521445667463445319069049399545666963964226987601205775779758025203050636032573971102450079796412492600340423035108369257382252037876598380413112041322607457477284143476976799070447204939224083813064206783685875542757385912714738266995897085675326262661799383699893093833535531474003888998738776326394533987258601572606728126132423544626435318503824444722066707645972738881186838550951172365510022582123537714170150885222003731126845145217957427885029934539778570286122019408908912721101305147506874030263131045622453035469357594505617996014165625501954420990482586980864331586491358710430035925952325118847871166489305036235907256837856600674877159442042197115315258876563204272534127367156156469225055315337851377717661174110969318973038131777339691364614565048408123770403283675307396854848229699177361428384007262083022675024628920681836555965236432021120534998417567598321708496406637323299076486667237230202906534165991957942209798502212575093380915680897574198616684132377119867681384137272098161157349054553079878872370184019349118138505550500672566537097565006390074109001168414750147394773154585928345376366681195475793411790978463698372738841496715255557988634435624065546674594014914519584311192420213772418480288615863037527064532103
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 14 of the certificate chain of a 2,184-digit prime (163 intermediate primes).

Certified number2,184-digit prime
Certificatedownload
Certificate chainshow step 14 of 163

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009080761451 --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":1100000009080761451},"decimal":true,"detail":2}}'