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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 #1100000009053807915 1,927 digits created 2026-08-07

Value

1253413060412181589055003188739293677715707874363603543630439136334472478369754161909852355903255095313370194212463100765984151269856880192167180968234601585614550801651585377392938322009664327891520033279367621223719445447165602371150499834243414402764322281123007403189113176614423977214008211822870583194084799676655830542477478616988854074126619889471218961774569592587912775305355811685986964172781129221594971766564463302649281956530541981541619983542182620684534705694858129609673098560187697780400501963378850229545683421454658537164338848495136276695603918003846872299180420521884014189010541938215523765234272902476413018674696156161914132309150148324357219572528789237002503929694766871037986234821711267127052500412492172929935739331508509123276332503542207662233682693158394567876908376402377317178833090012667498138248637309075048959024476260018887597637062242273788055040977251912422728844482101206958480529718722503238637175467022247981402740389765143921307816875845393668670367963677662523697367033759534622728960864183369861319325446128761304934620968405448352174262815761629428867615031615058238923869931328949489466298902423879172003469949885640580913094990726960834220820125718714669007810418364684383727176673462886127402617814339382707301217021046683422088975251803601039102889130870501434349054152902045798006945422658848717908753739609785567863288818465762897850343203727322097401345262662252832851427580034148324305808910172057850810790560156017251925191325767889600270017048353405669312240225579508946522058023209205385546214828720195294799357399168499181389120186568554298069074900292412952535124170430448963283815245587458713526260190397185098915902349245978326978525497743117976236948413287988708136349608160668932911331803252204334686944701156599803463280799264163976980092120000735585074031332812185693932369181077168848565845638650919062341643650552565383213849765359461019892042333541201723593
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 25 of the certificate chain of a 2,205-digit prime (172 intermediate primes).

Certified number2,205-digit prime
Certificatedownload
Certificate chainshow step 25 of 172

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009053807915 --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":1100000009053807915},"decimal":true,"detail":2}}'