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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 #1100000009019457613 1,055 digits created 2026-07-29

Value

21153043162670996831687307230852033113916552929513846529185230463459984342081589725249515399634345726104345745417584616362507944172393167216255027271019384890279461845519337808038662302498286569585531335743222787545072438633560619053100057979472246967951948520177467842308341350482495011064939763779248259059162269760332683077792134240871111736754266428438308079518043671246163012649869277928462777528784867144890344744207709967231501282930413046095766306376179368618649034814118097508795624472363900362413782229331334047419428929573796536748394695948336827027202074765637664488356911616037014159948048574286864335956581544555640416206680590366858862680650279872402693438695300019277374271440101582348915356559673149289722562302045694418590570992474233168276401841775382101295388406135111256810676617588278351099217180494803037397849812070155413686454642920379294463574419714371235899607489008325251432929348918162018506156102795936515753651770390153847970172923703195885408014732823324823139648795643420085340340063110824811909278735941807421647448317327
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 5 of the certificate chain of a 1,102-digit prime (100 intermediate primes).

Certified number1,102-digit prime
Certificatedownload
Certificate chainshow step 5 of 100

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009019457613 --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":1100000009019457613},"decimal":true,"detail":2}}'