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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 #1100000009028992124 1,059 digits created 2026-07-31

Value

225260193001952372670482802014473448690292060819705821529733796576018478136454152604459856113987132954331715532993121419408795615999593209830893683315839376615569992454327042251400576381401635066518057674209811402623394087039688192313616173451938209170454016958841487994928417240591496356870294092318078085885125413728985868199884174205016372234242036493164985180151807091576068605159200149148062954114663081153950861863035427308165350397840913562829004210491716697610428304465207195014312498453327007702487324298083570377773298858202995061115516597588339440532969232603286389660392668561405790903397157655873826806174158324520272108395787823004847360552651551807501096978571982206769001834944796735868884032474868702775224270180867367017594202743029851812684832881346366819845145109735610945592528120796785779425948715214673007990851274530973873919889444043015252914238016887644007299661297555090997797697606592860827021721986669955244798534018752369584845215862901423471199543898394878506927853448662027875280679963738654905940458222314879839465925080851369
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 15 of the certificate chain of a 1,230-digit prime (111 intermediate primes).

Certified number1,230-digit prime
Certificatedownload
Certificate chainshow step 15 of 111

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009028992124 --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":1100000009028992124},"decimal":true,"detail":2}}'