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 #1100000009018987526 929 digits created 2026-07-29

Value

55872531121234976559858701842406860081508798233862049338299975261458764879487795626984535051778800059372997374940705227648954096881667800315538145635008628217168807629466939661149514863858620819726303500687611128296013504224179002782451833876820821170849776184108206995004295664047523044382315553489971632514587103552752262398772816228237453945203806440524617445849552670258512841216936493139624820953316589441665267308467845302360439074753952219425913878114601637881653689516087959987303374451087536483844077098285553597104566917711956224931806129947387885192697427027757399865177509273921195136517359409008491317759129355534100613182956909459759821200050721993776791498979290688894357877356534903673183901676571619246069982022693299326749232826649824944569733644282111165519119831262427762455762478823036470271328668012668699413948224158910855573808221768440352912143914130594636294264303351138692670435433837432737112096309173
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 14 of the certificate chain of a 1,061-digit prime (95 intermediate primes).

Certified number1,061-digit prime
Certificatedownload
Certificate chainshow step 14 of 95

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009018987526 --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":1100000009018987526},"decimal":true,"detail":2}}'