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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 #1100000009012490427 1,686 digits created 2026-07-28

Value

207178913559324898089954815546209917014804533979938364329130251786023732244091271942455351257101280162485577896063656617462890295963537345581015019926300015518087406614204445683643773574527063739789662419098933734315578154772738085294559857769399648906767267340618971584648906046317111990603140622535181445219855530275182989006335034012876070631385662235745872120628238713415191266474470076136680688131309563961932846809823167380552801524014200060208232987552356520572769697481482209589736575768942649446029724273563372043780113334179296550811463705598825762085463073585892334790600552826254089734737088361519606166635179407386824707951042652682622689608363475415425186526354094676949766000206746186025461191555327041930837106602362717609495847693653636837356307739199003029895495956594808275344622948433624289410174252577948038903260246112984760238589016721948498568194772043462217303191374689768603893614523425124449889506098779136873228829527214403762173523506775932258190759778278197624364968632682488826301120859711938796265934523959066382994606232704311142866939018806734487427053642659049157001872408553937061769160020580965430192491059242853968877430532351417957537816554766370096300845141842981144586171496978808650163084538630741660409810302654993005949157780166949098705426141925200000386921234759775677139610836190191395640644797684730134438920626821607400463687469010117071862920721440552771211914063355448811304495558571511739634413174069271505784930139005657710220976702064956837632946919862270995832790604999254172042297383088282811708264950023330813662960131837024359429595787838652210076786553430938176086996121264416151895076475092412739845556030968126796820953338749
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 75 of the certificate chain of a 2,692-digit prime (195 intermediate primes).

Certified number2,692-digit prime
Certificatedownload
Certificate chainshow step 75 of 195

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009012490427 --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":1100000009012490427},"decimal":true,"detail":2}}'