factordbrpc · fdb
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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 #1100000009008085983 1,028 digits created 2026-07-27

Value

40866378459362264401239048655909328123155586557012819129143461185806206666099568464409507028498326070626993353307398273251831786991466263311631399913679051061775610177821946455110007382771123933260139802335104606813119349114058658525639878098249285080715090587286264587658969088142752692749850347256511506350001282010718324182019426360083903913951358658133060869696726061085732418220087933891654096243115534472367246753596068755539283445260138238264324574487496548248930399503113615345588884741687919009557479286863846418626814645864927414329724715214342519373382786356801303601517127225277417131786558005271031678544232586632410413033997664108589937812771590378219044518798016622809635672971254801837042103155905194402364150352150466503706240552343953487027134025966371745768871699969905908055827827347478065853610585403558850137305398502646446707701682335015714753222069883520444110300335453608271212014685980848115999009439143773920154945769185772963880082855812557133296906950693106033572692573266281686193100021492155432639
term 4971^278+278
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Is factor of

Primality

Primality certificateproven prime

Proven by a stored certificate (1,028 digits).

Certificatedownload
Certificate chainshow steps
Uploaded byRichard G.

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009008085983 --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":1100000009008085983},"decimal":true,"detail":2}}'