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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 #1100000009072504670 1,871 digits created 2026-08-11

Value

19978869760986473307958062507367369149344118756734789943932004900215825844243528913934720767882626528659648181211909211303290687922310319839848005866773046698317237747286039824190613038352849180111367023375381206853760516613757285840778873299932290946847195442914774229844749265687048989993744244403582302910559670788680084891727315050571861684922429635556899214903581367466018779356021301411919849157477455147268764321045008103118505197174420524550381857974775325149884973394421054673634338652973987604826658044191747273349560821603606161702282413434017487560002732940145320514784553046207609188821496612196553890634325185876701646731187584714014452335193757018039437371348868363073425990221052167928554920254446267642253433810728441621361248613767685027496193472934325792960398604215706061462794459807454278608633404569801866082560400043524167356394211140820622589961871731095630101636227508824237205786262494836202048148039960938431681700417915167404723053614290660677228397496896057408846601885793899617892925624054032974518526937228395275332277949262882482654976141612697028871880799793618774770611659405393592241091286866309111580429597074838360705292505658193148400583794469883951875830948249109825084936711948932189916622989124811358843448995005547291131085821744855576907138447359262412027464792900915872110406114941566912421725594718377503738868575996653584739359046986155826194290760699229493148193188416590748877022535624619662465953917227221518995215119722924419287835458291176183197471071045472218008127490832579382555411264963866526321445222438016694106186447513893146983679889436590438276847263264691196804383407912929389477869204265238559203836091726174182838909132958133436803311487969385993396443879228893326979969235855001600039184820003545345806996136458572316858684387289659440334738379430768931973909723984685061019824265200804830109130593245306843
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 19 of the certificate chain of a 2,114-digit prime (167 intermediate primes).

Certified number2,114-digit prime
Certificatedownload
Certificate chainshow step 19 of 167

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009072504670 --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":1100000009072504670},"decimal":true,"detail":2}}'