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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 #1100000008549031209 1,027 digits created 2025-11-28

Value

3904281081861907618472327121834462928096988939373220517302134956330143658556960857080644896492279090515536203470769783648521437810569453418574214291734568133408181555374228346250590104632462185389069341435609000311207797030542625568529838113619445510144722928707170768183631803187583203082697772442113426573901431384988135003293494223361386004062619337353165717914602848236541565206664801432681052399310220602600523835408024200981720677229425419638653377715668918795446401854123144452458140492781500058398612083873451962659026075966145945649428534701265454590925254467623211819800111120829912308821748867066733194494079255615091265961668541196223715548405131288183902751707860754989866717992635293739066156202985551521188074422581015568255391889819995729995741548475285413856412675082615976997403379598545792977719978913038106342580019878931409374060767653736639260577696569535263923567473582509365543921632099879759861556144518161401500861575633481954876199489924325080386425835790833065628382887465673883106491621968322506993
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 98 of the certificate chain of a 2,044-digit prime (211 intermediate primes).

Certified number2,044-digit prime
Certificatedownload
Certificate chainshow step 98 of 211

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000008549031209 --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":1100000008549031209},"decimal":true,"detail":2}}'