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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 #1100000009080307075 1,917 digits created 2026-08-13

Value

390439605455441156983187438536497017672900697692458138897493439600168034741810096408540591131841605789094179441672320215259884310796290289553823438066798617496529787000244817392087639178188934940834794134445554000001621665712793072668121435633379866089061095352961280256101896443585175737509547583637110630558901785515226787382292784971334318859904009416978218458900434252710699897207333170548112660724775388815241107711134013906203387707374328930001513257182093521764941214072847266702008276284658794023785528442415158376755034182683465057776000224741527049776818236158550088187361077299039464611095650985101218438777552441351941799126854943072888465855876050951798802190154500891307286719780718441147379732999457249063124431403167148955076217122002964514128752068416193392007823746497947805870361829187243957342861613678161138192186299469067558874012800870025909667601389939912980340898941646180055562469731606030582118073994572726141468020534398421738003345123335691801634569860842607863802810560956765577848262244236315738847226318561378356536287146046228789684914648183068346318542369857003543505317123724338663693017568377354172671376259166480547611034569847849990109923919363570307529747522879396261480860466152416455055552332516011820237299969028991468688157280356884010351005005788382115051788870946394845662395003961517483250038324840233554483807953675521231115347071157726255513016006278731574683695549187309399051741743016802911882393130879177073545722470687557667880737849435415580814336501845579894846078642708665252417920707936799543286166517163571263074100975283558670770489243638038025862189836146125833734071196198678635668929614338784743985638382353833385772759923358643902093103214042003959747202492958438895071920778005771703812227984844398707718677052146087442378979058232041416023086791503221234405418401629019567302395942725994168672799102173638634431256622684095437288192256292720266391740551
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 14 of the certificate chain of a 2,059-digit prime (165 intermediate primes).

Certified number2,059-digit prime
Certificatedownload
Certificate chainshow step 14 of 165

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009080307075 --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":1100000009080307075},"decimal":true,"detail":2}}'