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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 #1100000008799243785 1,083 digits created 2026-05-10

Value

203388484384863397129135394246886985219316421073744996973020709082240141193105916573850654913590050299718223588945953153259507871783996820822562489222839472987797457831319892340985433085721087992525330189248196193148040942654830218604912225617438226971939361836506617763541131262604309410487563241016563653612783806699849555867062321413353370200701629078597087363706245094610032031721461990467396547553376023457944028472607424712359742714066059008335447893392486841484254692709403220015216420833446681237249554221822137372282477438858784537466253362682891083498584344768274265717236348124424079890728685596697217118033867510605259069003872028258296403136572398188781810418797164955450425566922196678914815814611500777973119502055654907678585764657040913951513564109863685474218791858044961600882469241232961012753473800896876142419110217161748187656917160797529069434576934614702018317593560638075845050798183886854392826986842701504019665880013215554377925351558800111065298510986881899813929241169043305506074198836593147912583607818554629990109000597436785870777149122304682275063
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 182 of the certificate chain of a 3,883-digit prime (240 intermediate primes).

Certified number3,883-digit prime
Certificatedownload
Certificate chainshow step 182 of 240

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000008799243785 --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":1100000008799243785},"decimal":true,"detail":2}}'