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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 #1100000009062631209 1,128 digits created 2026-08-09

Value

697727679656285916925478030178668318984915515258139898657269641269835343763988112573695011775296885350449177754027733748265827469870114435795423633532158817491151755948048254781329980970665673476522046030189258540140293731859590339530973124743170018772243071715879863839218555832263373801390753433319137833713728680066484058856607440074767156543227884228495163400203067808310673604852167018456224630164530924053531603730317909677201134238284407405414302550276812121919328296145979865153495073735385288743705965879829891951145010593319696198785619178645481610050494180907242152441655569548924479953572024890321857981758559343527198768016258730673910966775225117233865360933792742893728833104631123101303591502773977835890264447234970060896998008563828801998815477239657058919062367819727693864339050519325153889991259413699783316823967508886328362029472316505661730216391754009276917055051136808931538920141847946974041400314373036998337399572967991812291697258090947173745420926155686384016376383328657837203902670426002515260335263078891379358655173712919242219424952615102362041273163266491817412936936594637756840215426439883
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 47 of the certificate chain of a 1,696-digit prime (138 intermediate primes).

Certified number1,696-digit prime
Certificatedownload
Certificate chainshow step 47 of 138

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009062631209 --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":1100000009062631209},"decimal":true,"detail":2}}'