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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 #1100000009067821376 1,160 digits created 2026-08-10

Value

28608176171571495568481892174243600112154313636811957179918117581363253039312361547673323414185540490964125829448030452111235810729992521527686920615792459281738984732303386000509316684697009554894004676339491600107031090856471589780479197721118461677301657572675589106945520201660160668785038848112910861973217866202240093109386184559545327755276789063982448274934252100411813862022355379086998399850674260079574117325455486510878599147072412293129701112664582297549371206394394659722212610473155279774019284178614739122242933287381048031417921042299930058823208728859855004200206785129313081422716527423120576040571263283091651960980239732704863221399421804394022390744013307069356826004451429682956550736575345193336216637347049653475813817014369205210907026723216333853206827782707916358287163452842822994257654591355352241917585635585603710540122735052075162953154696619469904846062609608275472017115142270877074311100061869657603162576985196139639080158360164463348776490218334441795045030107627420816393600311460362951761806331495200186084381376356202406737758686037568387048329372422933367610349386779485622969775630416364115927763715944288833736173823
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 100 of the certificate chain of a 2,491-digit prime (185 intermediate primes).

Certified number2,491-digit prime
Certificatedownload
Certificate chainshow step 100 of 185

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009067821376 --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":1100000009067821376},"decimal":true,"detail":2}}'