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 #1100000009078003822 696 digits created 2026-08-12

Value

256064931551282793841312057092554459174308176057818519622843713036370936963401023727492149319748193272532301523622231102218338493721940220013411922824280747099118447368236710638999100492544336451772022694389461794407371487474441594592263517870391215000651368152930457182319178081838496797462963498052124658806882571447095559079917227492048190439222418143364723307743400785926581576013185095261575222475992193071463583185510080507303681995323645800189518847717811877728926629942272011059699492771601901744453815104019131711481538753860910586220109198732300687152411661240050918906493413777299566754004794897947067194441189414013105384404265933457981770849530532505704932056502640831218231279453237
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 123 of the certificate chain of a 2,145-digit prime (171 intermediate primes).

Certified number2,145-digit prime
Certificatedownload
Certificate chainshow step 123 of 171

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009078003822 --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":1100000009078003822},"decimal":true,"detail":2}}'