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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 #1100000009061620236 2,003 digits created 2026-08-09

Value

28471960151422636760694013470413065854376951642871977606909810858761983108406056019974656348093625999271009854089920763407348978581358752609513128736382019409008612259786461812327814282538446858670731598718165679388281719405018420051135467971081655719795546952486973230425871632887798249001240954901959016510197081799725438066251595657586029227885407821825343359940695721536605202333974354412330997544509130467669723753124627517409008826821760563027862183311303694396800465271033885560958639752967002161734434389466384840290630943837019789330371859923089914508718550505533210521087604475036714151090276589631204651394735320786883782394749187010218877585179845895616586199669699943553505825616481583398301129923532424169756333959586258629039530366160385732994836699889559769444206664107455600828505534742537067446340699764074304427066220648113869898929381818718684418705257993810665912184119195062397942681723614353609170689476758214550631975687973370565248265775863084245288735517584232952010718936802913616954912901929955773935057476626776623268052424783067203850032620954622049109340287989624283166534815214800829098416974353963851098711121421207593960776920118303180850651229692274547948486021871145174483613022247875453427393725948332070920531533178883558958859126898232238752677989325740305228544403085434247857939563051643148644470582689678170660318822994859094492929370699444724081404269436668220886089382965634168646031980198431630146268131559545201086226411223096147242262493778096339867134974308032824613205973744627357808872106127467313363589120973954083102835829428675493543823221470934954505652799363675431264714342847739912589307509934621615519686469636338516590127309314459960574068500322177271441577306253831793053806058555235635870110711179776016863684532924006341060790435606776624166290485983246099820225706351106989323619859930885625043578516122173913154470671331726433314288838698516498866271236909073928847674673899954858802707616312765430121141120731249003697131009206144866905109
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 38 of the certificate chain of a 2,562-digit prime (190 intermediate primes).

Certified number2,562-digit prime
Certificatedownload
Certificate chainshow step 38 of 190

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009061620236 --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":1100000009061620236},"decimal":true,"detail":2}}'