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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 #1100000009055621437 2,169 digits created 2026-08-08

Value

702837897649224482696154008618227640045607857756432088257128030527481897458231337585213097965516937176387429581640095272185484545644591005780343263776907047074668961023482801953451976791642256872870243844192138825745975713058442772817053335895644935777732988237747323383018726145110181892535383907323940552258235124151627194004874871543241073110256391086638090483377103097742687640770828104155979445896057815153487394405691622910948137172557932972677703978961859354662636799098632300741151217483830697472998219852026860648986642534609468559674438494728802939166086112260447600401177205990898310502674685437565719800917156884839656204597384867066869582456808933842472691528182818993151983909958024081898856823950525276020298564102047151470240376145892004171782253229390162012224413595876629681503450945107675428640772648223118800680065740428979775379700468514098734380175281832480679324091957176971239866294661207712560126797259049180386860610704043358768314637609879082692159664252629952852159586440874559614130923269589460684019482489998338056634853845121502565938937649426682559486949268738351145580272366790799014827591082426260957467874081896032204152019080588965866571024964169687472790553925025801554108460422921798815906187679313645194719624217571735452496751806512980842852824601847903960764412880446190085136026447984974275206748583125340077827201035168394229824940468915221456202749604233134049742104654795415962508062124683296515466609847884690621624380138002897222143394886936243888870101434960616339668614257791810552765774027212405570599846160696777103732807984707911649567936136987002007946528133656609552443914746745739654250567598544688501981532557257952379485048319360282221642870829031682287782933583552664234829358485201361471681461014404645914562809524211905716159220972662607241624872272029705330444471375964646472271140915393206017651298785932499810759162486086915016624919869534660322382262396687444201749526412950480947062834463236748216371514379353135942947702354311220276124860585470054695663077379929653990551790062009148885936332951075336997157608372188085645593107628878571074146578050475372689668526788829691856936365418127094192338299601
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 21 of the certificate chain of a 2,423-digit prime (186 intermediate primes).

Certified number2,423-digit prime
Certificatedownload
Certificate chainshow step 21 of 186

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009055621437 --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":1100000009055621437},"decimal":true,"detail":2}}'