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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 #1100000009059040198 1,422 digits created 2026-08-09

Value

439908206321620084542707134706305184311762429354607395901640190666458943922368645767774574851349999258124573708715602069942288224376916377063692445593053945399038954537213144480277661864879492788194295157128462912396436440157667255893905261986401477471928655744201029601951151830736582697567733245390596896333933427743910005500694496661881117099252406681840036709330726105982628294017579206449190351166882595666164811404746135320529683845633132561801960758751716880499994051975672010631865287722382824330542140059253747211907301640614015839994765231119904862624172546337261719523562514427696138540883706842540372446828393389691644127159517555199174656640387070734693603640230143578649493628911165091920894388178988320122542009209088312960482896872212531674992758979627875401286791234677843525804272718309663433120442837925520848887884057342364880186485296065622149651319593809811439042350859430297297135334091255971991126055527290658737510611524265586156168402027269783252588824991004228740291189398363402111861316136786002051291740917549347794982033654784385966403419289720070706823492065472641923729450596524937237188270710421032748033899731786535943064095343268065535743744500730848695306685585794864122481914942807631952721531429747934948716732877132246943086146288669255656432054656221873397643713306898772967339030539588553482227792831235354078492957964267630989795190026017356061012448614306736744707741807253541243
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 66 of the certificate chain of a 2,260-digit prime (173 intermediate primes).

Certified number2,260-digit prime
Certificatedownload
Certificate chainshow step 66 of 173

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009059040198 --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":1100000009059040198},"decimal":true,"detail":2}}'