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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 #1100000009057485618 2,120 digits created 2026-08-08

Value

18125428654672756944914697571682199730495820291756480280663522594150729639063606228556972696741501632004899381870109148295936846384290535353475605249317770995185586760755283172813368788795668568279920969859273299247668158506898921564580400740188688530942426019709960200857213445221259141621737917743719452506520032375203762858498150178091195423815319986062245260796138201843568537338619646486409838066078581493988590871743421790019851162665548349672325498112565723271133782397659751344754485424928915918015253874259569462389829543044147778787719271201063605454943046039265150688220176957150997588535155578351557122632221597049341643812252661322956286312885007443747982271168589129600560463203678150342349342064055575247247654211517082426422653144735448437358866763957743962240361505000711840527509363144679311984580018159993095969142167792494613065283662300234152546445184428395960181216035147036406640296206029884299979521446422158936586113925017022835866927998089902874971485260364962345575255972014206220873823637408342916506917292728002629216576228415019128390979830862407803233562923713402871456597784250647780658986564679828320251352012501102244493624768687906100597402593787662961353944927530192242683536957647727042783030377045581965951137204112967136393240879486704857319600537930563922980141762935175530182780261721158952008482072243553914468523672161960227690671065485527870207375406494074580823108753598779447661409156106806696513260768099381473530298479632424679219749197096633819193494341589069966518145635006217208482317746879982427926525816288002401792911208229929700235205799079997202050779915614139488553344841667389949918773499857410597054430349892880749530263043425485860587111111612437668237627556660948367010996360714386252431666744805361239106524400653570185183330918348541464452114976193294166241557171415088327968643754903442750596207790399613796927241046484559033717515931259197968788193524660761290896387896125558058638666665860939493817681698476762667449487340602127263918360606977030043947339460311575608048993701157507192522845466963577718242467491108512460470080273602923587719493816997031
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 20 of the certificate chain of a 2,354-digit prime (176 intermediate primes).

Certified number2,354-digit prime
Certificatedownload
Certificate chainshow step 20 of 176

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009057485618 --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":1100000009057485618},"decimal":true,"detail":2}}'