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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 #1100000008787269901 2,050 digits created 2026-05-03

Value

1103361277065762948740635284853281028051058353631130244147149135695570041611849428137274810519585979104591296213589125999818717782440456068335730844127993275074478347542450190244061145905581425225718458971691924847472588804910870795677926957294441216116727210234742985004356622076451272973397612222523201326270937659888729222776986155514670205218273111287828937282470366164163937985392780022685251831798635636076422099430136871152503505089070879365849050030393725552537118452765275345995720253968357896897375779407542011054088154061964857614856427407138220131692511531408643055170355575813794897111028719296215179012375084509786481301393254602985507259587631506797250162353656213077350183371617698828787845413382900789290351870081553202443447196144257579524663390239027985354283291095827235199920337648679642592212507796224612082194113327624172363534898914034718058779466064547342221216727276838763298234775155960152086392907375701455869707689480687754074457793896307732167976816202754034599390789324125630500785205807775582077393780827995851494144588278971118253071387452254376207484517954619347131192761610122417914600233670284371884940361760174335760847655917931801923319496685595168827951401595843017485736819216445683759640411759336923059894535333237900672604947304436388577238979226213280304148013820860371847791473146642521503334135247969618678965967686948096684423944221297109645052842644552806002983122108361424331646302473248282483408724615974660111997858133654322135005603408812831128007040490645323914135076222139482252216761899676926790309196532196762684341875358808280883955387710031874668605867335425242724804777890612366124364564641106125994374100050698449753744259993547208841781289434796223853847599331318467052701045613200625536055643941034457920348562608069371959523147151808722877102869984125102441866557742443304218370462899477780463848425506518186016002947987639323362832381215593698883081851734872463085173553907934259779088309373362077331987035818633721885014122091372938658483964459248647380427599979522060699649357026300133
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 75 of the certificate chain of a 3,202-digit prime (195 intermediate primes).

Certified number3,202-digit prime
Certificatedownload
Certificate chainshow step 75 of 195

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000008787269901 --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":1100000008787269901},"decimal":true,"detail":2}}'