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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 #1100000008676650317 1,987 digits created 2026-03-10

Value

1208798544935335447049561984563766095173789675521086799449779893592722790017354169493667550618743486519310903290220138046145610721479443490766939352591996099708422414916035508059798027516391909220145149985206751992915637065405171794986552351058722673299393225254262319815944711666498873415069013145272447021989549504851096135398960756524716896549334515523101313918322813865332236058681576359951448210964820414948625206320003260796351596088513741762260144321315355534954555716928301032139566024175880531415134148775936721465187507135625878917235530493946067488209679684226645394673894797971615795748212428959271139320497794249966344637243958470142369154836851243047193594473411191383949483180302861631264137542146529900867686972702908224203885089532363530709183720170002238163117016333834887371217023013665015805202906714461362608955086700358178294844149697354690301519720273884945693908578495771400377900592666575174843671992523063095113908782252899565821854758485960122496588762870123472282886207453195361738155071935139414422299924953784752187163090989641095625758618382927627035179972736489020751254090764957631445502478363677651057275472425199902042064588349406609394174126404646438844398718011979039689299432539380301143188827237610539207845422131339818744485896225017049444150352432998634603808179928486310052388572161378309949717159544203700636104925046605388174659805445914669254350266777695915974358470027416706038324011815903974490164429718380897355718667043174963205184246292320379981782771194871365255846015167700860280932210171215893478484544666488702145429707488472271979293249322189947571163432085774086168337464161327069795548510097295774070632480829442453108449659414316668137314628860027122417174527824639620782536098046572912690528450881560176387156425279298094728913010246810216932671461344369250870274032062958092174070623884736154811232248540783697034103100719133102275994204220454020928799276901816416009576216855907746249807217142206221781376382085158958375288163
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 73 of the certificate chain of a 2,930-digit prime (225 intermediate primes).

Certified number2,930-digit prime
Certificatedownload
Certificate chainshow step 73 of 225

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000008676650317 --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":1100000008676650317},"decimal":true,"detail":2}}'