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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 #1100000009043271954 1,246 digits created 2026-08-03

Value

2135246490428016361678551363017576941062761775313465857546510705049034071355879503280633106076888285287021699035401232371100288950923339507300913819767321842831955558182281806374013251023390171792446918031393793217621414430473053512100966845804678710372381447074649967055489633068249208924145594389176533495016018906002822326818255645119466402610613720789917965001953203149965113551272898939944855560189526314366654623636966086104992487324658673621651514529166480857025389824477897303518771910813303696125551845335172423589353252349737364111856279656830012757380096586097799949138680167666210205246765312485667726699704737168939297993176828741023038112448802999178807937220726270950510637295469926402116182746852132652025596988948196881850514198807488858936557664418452640648901595314120398399189485668929082240371917723876283322139664018155447261807140781982934125913487077992513062027062446710662000995774509554880411710283108264489070354317665419586941178239254760276231692314708383248227172137921801974917369113828845623923509823173475207489620769428007977206713342927291095792265755089185356217602279624896982885497134378752014754820959831972333710135527474217225166173668523692627941601977137920579691788988724642873012374380552388229554369
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 12 of the certificate chain of a 1,354-digit prime (118 intermediate primes).

Certified number1,354-digit prime
Certificatedownload
Certificate chainshow step 12 of 118

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009043271954 --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":1100000009043271954},"decimal":true,"detail":2}}'