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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 #1100000009059673985 1,569 digits created 2026-08-09

Value

662595487167421857493856294808332211685149453677883858332795963622834254823906173795786057106409530918104425162140109927566103532809386603608051998525588506046065670344808650051055820429021359054994047272633191748652758576419117899270050480495574337339317463187016262530199341605607808457939668790993445739173149183207939733761105551843455209353746347231609978838455687440037600036918463695808043554537005910128227753358583362450948707115599089603467407728605130203843333621774510657418886119687180696342656690767477428826216028866454302947513320141531858598984999999237205091338189063527718174168112653526389390278291800628736190424679631206012268439384394897071633098898483360930555213117906663422573972357198298987267120972371414647353365003448542183577507186879453427877960492134578649330210858863502775229345425214805534725168765904197088207844014240696588035298265257376091830488609809830181555031442957461995837815170643405253007205097278431555034002147963084266415707914255265500340338642720246084111816780651485040290243620797739494653146266722773398720496222366799834898228892585422261158557128006840671858876700406460251188010112596622500900209891850821953847037221435760877259087267401428745461173188726739077033436134429267898441351377498853696572931101652735293930580605647993621274842843254135347495489845535393346305351161114642036008739109547284168482547154569031612806140560132097595599764430891319277344318985333995167666546161582698624995065348541796554481397538793595723488993488677663345716083399239107408967463743077427178108734392215258292189057
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 72 of the certificate chain of a 2,555-digit prime (187 intermediate primes).

Certified number2,555-digit prime
Certificatedownload
Certificate chainshow step 72 of 187

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009059673985 --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":1100000009059673985},"decimal":true,"detail":2}}'