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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 #1100000009123068441 2,282 digits created 2026-08-30

Value

28771036809987712910782991009064278551647074383550271876944441531414352046372829844321675609584273196158012586632225581331275505244586587437080479319710005181202095742991439087473751129680551257099912526356366278672840720104401439267205191744698343390299898450709088560889981186583994926611001397763490725834501860511536841833344624300683383769342476443247301660876982745934536677828520026664794930732185133501001388470838230234722848287830782192807664613407469346595269005267000149671361398841860971343209486681436057925196747692298720588895260017702673894488424441810483396698182097331162477626672651013311945339520224552061977983030238094238686315265248791909791330878168756777226348146101181312850747023473886610538499794585295780818130418575472243343798911462991091614014228036838529414751359096677865596203216121748343486469990668428911052549059956057622985544625653429045631956093325255847683638889752720256821059361857524661736114227559381795222083660944212246655148100600470175794345993357257712504975859323955064791986088282745785775327576239545768400585248476472642740637094027796747189276247762248073116059787388215111554982107669616839280175716933321684408471310566775380315872084240677966037915515819752557672942479475200677860019362986517815991192211831016022208562417882505924809737081017163426517521926880812773834235565499230296303632589840151670514898884659550253920151412550387659788855550937757830187067458109791716992571639042327169858363001410180335134385296413777807092606650716283048124521145345427626007203015741767943791610947412048165955791831364104255215678374868731519388560302917786734616743342405569376789785225811192663344618950847761076274129586273618734101744753067631851823570833681250619273404425803003983184465314164286966288345743448997215135886375594829614414078292852441936041599188577046271486198028802786602635568901189229053524016434979970037516636763811489993864680804013092085326233989942875107420223119368903874740831166104417213299347889558381447249391974040524943049435189796665337013087246718933814933642103257365079395189270933712297985243494618140728053050550644873403302194101210555537560783896763301976883493852614260051517502749314025788217874070448977875406035449656081209843970530114689290802678107426471642712358488505395981
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 80 of the certificate chain of a 3,057-digit prime (308 intermediate primes).

Certified number3,057-digit prime
Certificatedownload
Certificate chainshow step 80 of 308

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009123068441 --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":1100000009123068441},"decimal":true,"detail":2}}'