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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 #1100000009051742249 1,203 digits created 2026-08-07

Value

251613406160939436625836282537133735852733540675137835761547188616302717719814424996487958090434542903453162707410926782612795132637410006420442509242669420933996673741153291996851450084128864979927003633304858069976695364409033427636668550216500935497680590663933119073888174075419610890192784689016385558239471391234332312161218694046004467097912087659525852510463117581822871100709338977814616731463650770545594551706721778666716768327843498074297006616398492579243071109339199981168771064196497912561016720023071676795454923028425447666803964961130676026326621035057485482518825060426262181821929872557132351625127265982029171132382948276306187582339455554718560287996358806193890160295542691498900333572901579041614976392840789245245437733115092295287714060518455153733340287721952894638131184719261710336183813246556570221993215511219775299440747716273614631514794652001654924446849779982968266148296080596266448497677884050777635579384401000942884991462358317244568482364923498030827246235553369039392178715942042892099735780563499249000667069448687164931941828702987181913890762183073652709668870762048916655083475871436356904274464310960455988814839339157977325270199852838933104508762481695179
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 32 of the certificate chain of a 1,567-digit prime (118 intermediate primes).

Certified number1,567-digit prime
Certificatedownload
Certificate chainshow step 32 of 118

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009051742249 --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":1100000009051742249},"decimal":true,"detail":2}}'