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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 #1100000009055123491 1,559 digits created 2026-08-08

Value

77516582861064766748449937878226922884864744744441885798557375834122533989397679342147538773708305172510613519128946379626464520522517036280292608655853467663332075068875991419091736993088001843403246718329739642478519348994437034664837065947296150294916844746475636009741358448398250415541899421067411396974549916052207262830152572848846366399971377348609674722912420846687991952545198706096166165822657480317670484843984601665984287293974432123158170152996428472096040063629462660691811141189164335855202067097000531051571360608802605735840946585983822176438644082405519093930837009258390793329079858519345986914300077130127802515638176208361928058561876863255962037338688733384013730213566371612461628311286213323519189721083055353501637915756362883881886440370631080667072559473583664841847130807360411352235594132801090048290673448001274865894027332225639993001228283509099136806558673049396967600010973028454917370227948092701120463249160466292375541181148304257155346627737976130107640851310137288126841066161628135742381531535978716820212326401823960102252453365782779477082751120395703024461767838307808427229420927092399022916816090805990445865102036785712586772258177366383458436705695077299821907121837647587966257033490925266888150892871011535911504169013612000469349910545421274407508350947572487106309989389644217269533310095527928849753691106079642140735350867553769093982281802956590941703033685272749637848631771312761982877136480495546701508014080277793586728995814343657385369308976936315795948360580796024655906503739170286817378476270863
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 73 of the certificate chain of a 2,419-digit prime (185 intermediate primes).

Certified number2,419-digit prime
Certificatedownload
Certificate chainshow step 73 of 185

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009055123491 --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":1100000009055123491},"decimal":true,"detail":2}}'