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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 #1100000009057154172 1,208 digits created 2026-08-08

Value

84220491491311290743106645323559277770319209392752716364474873098290883922338784742075990672978295857261292105990073899238374585934438114526085183469732268717840750355855507138108891502537661227831398352497202666773519436253613881525633414967787150456072068683859648559024266827249115238284343329820933178904698462712676571864546388129133913376522850495306404219651923593306454317079896960924669083256319445267349683483956324643433030141351751779100146386228981209658361308287871292174359275938377854681153189157082931805827930164190773922291347665336136604834736095802104781438615101107270943057791083834133770432992817765068684277566022297679538015963334753011566477826785156865201286877980970706271202228838191246000773179793563054592205671585907507482348641094726298296113557776034270741784530410789644234337228389466903884104068381132037971742565395955038088307780911554426534023450609670557963864741893622068260956261157414835608341215077377460587239008326667375488996462326256470197343893259678557006027330997902660376922236596138753935770182232354574593049267046413868014878817795964343878600655346270165963442900679127142047131886259882742010980972153466200718798860421534330018454845621818743695593
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 38 of the certificate chain of a 1,664-digit prime (134 intermediate primes).

Certified number1,664-digit prime
Certificatedownload
Certificate chainshow step 38 of 134

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009057154172 --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":1100000009057154172},"decimal":true,"detail":2}}'