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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 #1100000009127305422 1,437 digits created 2026-09-01

Value

357872255287446206812252718993209518945029686583078369454202121829275217855946263854232645080231170341125526588552788833206056952767311759924462055796945666374298101270605717803304355790377805142296588854597370445835112975829460680598322196889307124256590881753288984071783770871822585447448172881917944241135440056281988259609212132636730283166741071537604956294382666291074857407226801396719858550463106306855025060532549330101390997753234879372861479064748720175683182071544885876094256896817809562154953706893753665444340990290225485409825210980240707796922733854473812726730121623407328713397788444232024721180012304440045403384162449229789956864064191005695699129598638228078558603885100710637535081353847867687533762554477556528386230984505951677872342544221687735272278920952706656695464601717934846081603905872019632875015764455557679788116750623795190171566760850622451638129086008408477533968545571014970998278738883578289088307085432789086298947992748251393052329529286476492780514129422716532999725832685344667366442151910188228315278388538251792266324181855700806982772886067079204616702422604638477570157481853011127582011853672118830581623588982738093443407923163133618211655525401010968900586282867805721923880135559992580306147727244519260207143722151699489184822054896505511490521726067807891518465987990534318271986781715516712193402425177945665150708190760341117140304774563831834086332636008499288294228486821316887
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 167 of the certificate chain of a 3,105-digit prime (328 intermediate primes).

Certified number3,105-digit prime
Certificatedownload
Certificate chainshow step 167 of 328

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009127305422 --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":1100000009127305422},"decimal":true,"detail":2}}'