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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 #1100000009075279347 1,727 digits created 2026-08-11

Value

27826199943844961256304290698572927634174038707287117973623842844183810347825790065022252593168962072381348389165179627211552536856694983393338746997117197493226769543201952749838816067429773592790637869929712011120424549276230469871117391817358396937501949367140132234875170837928855162107262495252822184636361135478939160516455510876685426700196178926367293409995683583177096872545002372235068957323304272497449495686431190316207155510784037572315912197231671137056694047806726198677450662702162874394925785824084885658417210393544920016809828356081624279792869751910243217401455239453582936482252630924855823311954492464730389003538243339038757322187840834324123810710543534432698043895982897192276312035332786063241494727508926628321822809283011967234893011953737738817459528107356261406818556108477057464343452067688707975716659202228757528577307563967125126736607853155667570143439341512467694304654361994496122020650098571699922452498231661195677420339358935480283363417554605430138564186886346179080680226238655013371314869559342120709188367775259647498841243071278318098461977985098170553286921336721722055972014530691056856124107061594934016204008207550163340631602739304793828348661486287815353592660460712575982457416513227391613756939724138777599762411046009212019295096468094867287311370328929165476841733561520846637181660698343304490357980811792860162793910333577683045170096599565625191291430727958976843026378564197996955922614519874577038859770469179472523724525862270740783300548357232491971783783372531947800597161742514007850595555529027399044845858947788328639844320227898754686577574235266448361973101485488726686036800782667127308994036504529929759250155474178583530572841973622719426901488710282122269
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 74 of the certificate chain of a 2,656-digit prime (204 intermediate primes).

Certified number2,656-digit prime
Certificatedownload
Certificate chainshow step 74 of 204

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009075279347 --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":1100000009075279347},"decimal":true,"detail":2}}'