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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 #1100000009019702019 1,086 digits created 2026-07-30

Value

209016734723439249265967514153241137160223137196907009001528533559891582064179824170146595978475563807124948525110267476527039705956036911229846086123116050242423854654838271089487332263168626820548831578442241426555835267919497415599867972348219414907257610600477416138185975001967533214671994806362681674274015006554885524100967599676033555979289798554690297740344937100554178228098358761932993758700501611217444922373187226144636175780213825698853789979414216889287824538682046178743576216385711617101173509993998621564699540390220339430980337258318485512026234512597430909030270004786537069037663694036680212345252189842022077312136714938471325958747617633164669748425374588838538629885416021261855558130607918661181745813142745494222297547521977293283934557729388422612650662263859137275821797019359416062882387601247189844935842185196279139921425447114243365679278821532354294797017047118754815446041328784183943031631774013709985093439797890625853862505751363427904101289663837392352664350114790067724246463289504721102792074020191120866841038825104411328001448565551967937641001
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 4 of the certificate chain of a 1,113-digit prime (93 intermediate primes).

Certified number1,113-digit prime
Certificatedownload
Certificate chainshow step 4 of 93

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009019702019 --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":1100000009019702019},"decimal":true,"detail":2}}'