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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 #1100000008729256625 2,194 digits created 2026-04-06

Value

3504613527153672665042181810163075991482018995509255071089326602149141449563586099384582908658823228374514815262872290244474159671448327318349342912424651403459933268842811513094149627590448369719461717353522728854062932858798934185477499205611496549050603828845360049916510666228655947185153045347653161047267177370284266838359685346311413483433593242636990474008244818526182568657890182371158133005408691259035802902059498254643781217378583355842469677889681282591817511501247453545556295364155776608890852173157650554935140317988009301333069895242195853773598942668419932681710275679154573331718821752194795214541149265872430245123836666873556065311245735277398676194487568452460163588131072606457240827810431493596947925438612307540734182276547392871361335757511726296407829819671100547983139932909135541587443548857762820948407900753603243581831227079984978143668804219098189291525168096335489849826491671966169101754133157093837388806470888203020649758782166647176590525042548794173790961653080146665750677333785947156542568523563042033676732472586249268728383926491172779346433487915008730298710291816304858474576473056386601305551477507481573209554103498697591428920695539769225076693912511519202308292701977162062074868344892026296633605398960150757522747116078596505921099496555102143621911981045279531200058672626174151010279095431268579083780787545154867931171594556332528861163615662819904173672294407228853919213266240484033987257435237111284780662047835550533597665254834482223310300107974205764702241537344091371080710195979002974973802191199021864915825922250872625017743398949549676303966296854901548355667686222142567165029398508377624304294019436642884545508123410688390939276497124475632564713305736846898721590609725538820244269026738325891102056517654837691764702308671549619630908063529585232835979159890860469255840247937481146842685100556472338225499708340514327937527507913863962125309221204545572709557301001724618906296213834552383716494395176869667680706027414826580161912423665645170016580383954041099484991289845426185231516907371762300626146254941009076391308482593102445944317368336662412668986034487413120460974181132031919157693970541680447749409449268025771
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 47 of the certificate chain of a 2,785-digit prime (201 intermediate primes).

Certified number2,785-digit prime
Certificatedownload
Certificate chainshow step 47 of 201

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000008729256625 --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":1100000008729256625},"decimal":true,"detail":2}}'