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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 #1100000008931662813 1,898 digits created 2026-07-03

Value

13155585830876635094843974488004455779750708652030714530239975772671501181888040112796404906886510761110729235450333884937182446922985844979084410163819210666326003051449194298851801762045132703526211699748783922889083177764907185069600797306258013940472897798619208017422747442335116085449947026433597107235036554243576305246689250416510639619704748064755354743823255691733814635718283990005954042869327572557569804863532164551883457977707057195232143155757827357490568062633500252436134709208294588919866196101648234014761934490987347518796879545999741811409842244805340540475812359601790002286571168866992159235086663627192713943660505503438774637313711938025199914907633085924489304255062185516938958719331021351864156699001641629764570182401302260376574871620666563221907810286240993919050975601160836711904853470341663210905664009496816997211534773475356394544664459324321286485914625372747709641014462547896931721109081056590740854626063258921795738284986925789859307316411710378180754516107779017576282571177971128655991165647615044317767732348742387783504411574765416820417474589590264881346404312736684823373708561450247179191719697119081060777727629069263552671093903239499078822031253058465506997830123806072281679680047798496232990181361798898007035343710109923496611494758675593879128173001987714037270149901460776438722119607434070922118019275826522049611218768109211891168429107489160294570333784508535012515846444679046487656338526213983035210260639428002541584840751107918715536559871332639615796561151674670422208991427865739021002970244310449583431938383859363707029783480054177121035849807954623834166246982065495521423486887925051939217019809233816845422641542034168921836048262205468805276415427208322371322781120742332917454881060243484443311312379413558731352850529481935090076337306433493497245638520497573984717253444599102688252317267820100138540530079735029432991501911
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 95 of the certificate chain of a 3,198-digit prime (214 intermediate primes).

Certified number3,198-digit prime
Certificatedownload
Certificate chainshow step 95 of 214

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000008931662813 --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":1100000008931662813},"decimal":true,"detail":2}}'