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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 #1100000009053987209 2,215 digits created 2026-08-07

Value

4555012971675346931936697637540220785281743900739641628315711862077478322470090726924370632492818386914937358879916312805629812161280161767553182754534898088085016663480065383024095427018790773199543823009304653782764808488595188301107758464649501522198760109165498693315264817981577965276054017941831422331149592667781314780727763433804300657449787154476446243010458072350670700541700558679293455873764269960002489730749298115666333100999223697580129201013770606104754178253233656119487491942191202395218679036514893985390418962873607766256499937575240558980789229115882224635447607975190148735794511247839104069910498332553853824526047833154832718809599637972224176142641069682396291450260428734842203111107384285725582534117696560544046548378711011365431794426895041379066946543362732625407514680140895471901782987598738861208823410253134602573724992915232479424861140030092421639329332465965406695226093821785906885110772983839894649271825940618942055782933246601307840136443405908485340435119690852598181946418758772834483370739091721071016303371923060609094584219427280901637450240302453546029229726110107952820899726837889063985693301488434472939696298326880341970615625535937839524093336956351359666437250637895971534745083628543809092828042952712290609228276557707839276454432004543214277460273418138222936383185260766624210872070832206832745866205557876393739589345102495998086298647065905487478002254835089043911215458016782024524689266168443282848272239047509277455765240379548628875876982933953445606835191333260780125162604840170680170465571404195410912427967015297615295277271462722362130102036727500231488539803911191214934281098022028135349340874604254106147090021712494155428577864580946331328249234530491704123931945795072436102687903949670026762588671469167774427418424409778525933778618250644374699816647851461535103199195990305596175482797727066942003541464849249676752659023411371034885544695502328822993927039634912126122201705402434544669715615216338418845101014664939057500259493083717225763655671831843177575632969104694172309854982848502015694445717904939169942116763560710582750176623280668263507899709429412904680666328206869478017242531874530057454343721323837076422971670615117798703
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 51 of the certificate chain of a 2,857-digit prime (212 intermediate primes).

Certified number2,857-digit prime
Certificatedownload
Certificate chainshow step 51 of 212

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009053987209 --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":1100000009053987209},"decimal":true,"detail":2}}'