factordbrpc · fdb
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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 #1100000009091972899 1,140 digits created 2026-08-18

Value

128125039222038323329511542356693326700108306673381153145443267856244813589441886798984462771412672599416882405290770592564493627750275249580704693350916562668985088476762720035780176434993686759008208214931810952152466008508398353944971524824973291833532589109732410495048715136096216639867570099966418898806496462517585228257357962605298879721358477837597101801226126653233015502485722427358550276960362661408561104237502462123313729996385216269295988369574230338083107076567949308483801614756994589704950949267748623709824287179598958209345593296425275000634323936509368942407564712103556106631404910684341672998027298542066151422781533872849576651956222991849722383332986375272541173367055281654238900667359253567166148473703570709073512481879338222444400311940848686191440823102626419963943590782960934240895741309319826727933210184304276167907685864660841410062434121027632854570752827595409419371440088052015634017360190275205984303201139562854885317173226272546437963649496219732924751987056365827591701456324592541319672978246929034882255922278094365163118151185733315561010066093854872963371640778076249815883273014496388145676301
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 81 of the certificate chain of a 2,091-digit prime (169 intermediate primes).

Certified number2,091-digit prime
Certificatedownload
Certificate chainshow step 81 of 169

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009091972899 --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":1100000009091972899},"decimal":true,"detail":2}}'