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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 #1100000009028769913 656 digits created 2026-07-31

Value

50170992439626142426632728096673141144514464257473199576397806765809526592419756144657000345336058097610011098492448089154816235002800639714116310233599524689133951325830448819932520293685109368854303853078717474422589832710532567655473080568370543102564103284965422096900305349699828465393738813253615053085913377082390374983813720904415870310717429936654057596241436211063179984250331249517166265495449487149622437540332307321911095828881244878923901774304194229987026518499863216815754510108680548896834153012384007913677858527744731368336760447881537205844195979624826308869405937575361418793174078070139019660104410932517970431552300624981011227314557
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 47 of the certificate chain of a 1,221-digit prime (94 intermediate primes).

Certified number1,221-digit prime
Certificatedownload
Certificate chainshow step 47 of 94

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009028769913 --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":1100000009028769913},"decimal":true,"detail":2}}'