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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 #1100000009052453031 1,237 digits created 2026-08-07

Value

9887991201889507930564612037371339596727909198930137020306196636743032632704818418177229049505023355049627804142495245964211097432681298287875517196377284011369443488746669401627722260280993040741605582428128444373103837352591122957466924271542700837524009821665017973115620807822212792048822434261197039292104446260965208795553617285427126901020218938827378588489218722882499973616075212455309668851485098707447634844523191665338093331017943497945120010167364290050318425214878876101447082618724330957876963508939074416246842771974779991286715450171914326313697310494496624289970941533871825177159133415481777159993513004725865421021978439392539775642548935456639642694115533277711132419585711852271943135745588549492174918688534795306636297539703521178902699756401955253278340294623647268173361856482126364895856828422125085274812418255300240835034100280864184994639550443153306413996326151580007701083571433231634680885490257842261324281948654871810314871156892280071696156471439478120266869738568607246109958214943614935195496906517870593077346608601930553643790729247616095270999330346316429894370771992623148973480073863487948325000561308705868748887985840064358662953933683249652661026759665353716057414025473356213575856464140623
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 25 of the certificate chain of a 1,587-digit prime (120 intermediate primes).

Certified number1,587-digit prime
Certificatedownload
Certificate chainshow step 25 of 120

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009052453031 --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":1100000009052453031},"decimal":true,"detail":2}}'