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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 #1100000009065128227 2,336 digits created 2026-08-09

Value

55927056064784521076954989870021720523397510659951591208740607664655144138616514513979379004811396540690392385155179148196642235013751489827753268082175359983879017559020312057674612902556261510318464784803237645445365703163700111123658385537591535664209727454473808332236230554107398482005086942330853940010064509546005132140086755235105206603164480944991677015291503065253370164726599870412826019792444775825172205705033848736732444305089397065211368824376195954742622630320415446248675700233583524064486834996638902184625212505919725140295673615020086581920595821349921187272003996673048486538272002583853346066894534964497864623444900668877210443492404702860053477031857390781498648128558817028812584719829774681472045175466063098779335735759056892457724569059193963733458510639176693427668653182247640698828769276253878173272865944078960297004547957832846553062078791011407800615987360071283182761411003886949720473492953541996207165784948499153339900372953104949560254409098598618370565491684433987103669374863070218134594346304212638513424046255472183301510674274806361731084472663139263856593156850097946121304661189385139214633343211716107035340894233238759485426817309919306798625010396063021122017773351683699848199197159187255226740947422900367978710217500957351000035675528859202383961121621164962280006325987046323981385801725072427258729959408152403312265172201618619972884543053649635421143481517288479248584374305388693771939406940301194716228164192077887031061656565919216858828581031643040922537776808456157310336700760702681566813660391068106595736906384573127001323730732187363311146566419905836267767514049934158221443363273685566336870325364587323982335197314598948740669841036748673087662882319239884411414401491011215585931615248478554987694624172213498055858085924594879610882157861800681340555365483652392932244429360309942997771681300881576122632424541687128656390671278643210684029135348142570175083530175361034791206307704383339852216132286377038253879656539491470630100670744278205157939070482677306941574439336323220794829242482265180931098080665552743559869324260743259490189137317185869562621639083888286480959675109591441441143824990769513264766860983861021207170609189510567465988987235504919300855870542173606359818439870118534734281836853074441142685682920322568271448562667118276683634366292214637
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 14 of the certificate chain of a 2,485-digit prime (189 intermediate primes).

Certified number2,485-digit prime
Certificatedownload
Certificate chainshow step 14 of 189

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009065128227 --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":1100000009065128227},"decimal":true,"detail":2}}'