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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 #1100000009044155898 1,005 digits created 2026-08-04

Value

831399632622962842975892046606459366875703960276297260393871186553844583451619197208287957296266190766064361440883431804537111450633491755138529614959524319337671365242038266574272827768991470428283300321157767028555875866691159046185081185313411801541778468625191719788013310737905763118335189263550570988734498083779921653884609868841968331380344077843673657629599694110025300603158666089615320158924337668148812164325932488969307846225211891764584529970911569261381030285626134903610525320686222868600977592016186530447591338101319748863316904960262276453149269731223413124148998061857704731151613624337798656609785731101978517689855954367652587233405694707361392434301650005696513228538346483702332027974117319608430948869283743210188155184796550002199856285280016982361974981340187201560021623808533885859643623725061528232326490551754568061312749090818294804633393281520651143830900223592684889374337258374707918900715745237171526560111242572913623242698062803165053706213564322203654777298467372481
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 31 of the certificate chain of a 1,385-digit prime (111 intermediate primes).

Certified number1,385-digit prime
Certificatedownload
Certificate chainshow step 31 of 111

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009044155898 --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":1100000009044155898},"decimal":true,"detail":2}}'