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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 #1100000008727412249 1,994 digits created 2026-04-05

Value

25454347016106202157895664171385840010178805835101195696268479307003360529510845126304346377084575246071488645850172348561366716358629484552561775030314097965973642511889372368884023336863875176777005703442596311192160755409279134398266780512867084949135516508402897752228089223463229126430137246245159688733743505655469192655264431015383395884690294895940919147306252737581738462608589395406594723463981770314665797904928731082264971020617920821721712939522286325008558513263910443445306268641097049903723699210682843809984385923690724601852955713400664125279355228901317458212694323071205093146254436736643317331519957017244936105702713182408360409325128811116517380919804714143398295491011692954705993872556717180537172290354594681863295380690095352703076545076361005542418608974661118947008610458991830389391729727582656140332217323662876861157678553205030966555723116985064214554327591773097175828580426028325376369989595384511143595096953469675366756035534593954918888810286298068433788131137539507813624517142869869857504757403500713911060185293588137898188055407093029432615449565834042148673908667122216926138299463159324994991060057787760264785777736184513633924217106182953050005879168224572998277295160293500896195524648669922747652304138120364947346934165336773338478517922344683788802013416786632985642811383621242812286862698381433001237054229434895503357090107865895476482780363878549360943418332355934205018707251168987185540208687086407798466947145954757286791201426584767817602420973031159129008850304947314581986603655776860457000349990337090610235858096927932814752545321386758843665487105006538144590792793582068549567210312932300061391982919657856651468293517384347646669258010268941596451276429074288847545649826705531426034273085857287506078690482619205320247588610347118887071654510830357174554009445467747621928798962370848064774605911746652884621897026991309908888337139292286898684845844083485952104104656299987021294083932487936032757394023759611754777810847131661
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 82 of the certificate chain of a 2,772-digit prime (298 intermediate primes).

Certified number2,772-digit prime
Certificatedownload
Certificate chainshow step 82 of 298

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000008727412249 --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":1100000008727412249},"decimal":true,"detail":2}}'