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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 #1100000009061970989 2,057 digits created 2026-08-09

Value

26695115855648138394313941396654979654972229140122799396237974616924631664443570501373282911123324046542481546723902921721152745305945488812031455435399965186861587022233286004090726969493662040828066878085565603343534846859462781467434077335944899846807416947602812273851987166314074061051470040368797991696386057487294670570173842681577854031343213339096128375084567166564849059350059037852313236629279331835013334469140287279735156355878714484240907941821356548615523153499870665678753937135584318955491818167289148749747402021703769941127518855770069017565360268344849610099145733359920894106919365087316175802215720076938277709912901979289736094978522854131689185678520688898919025405050306982253159262011632855076369981749811765860763612722919251344334291455243551839946040663262231063405092849081176919185123094089060589359054807575991005074522448704951867689358829422531475827498301898820113196382413459133110573832935177788588154783425425106922297059862993185915035240671601940980393924766210703122468476095759634532886514895549030030318220495234069836930835654784895867618535044204265603010053185450533505987327710368594076560024345967492032183437643829132453481537428058757540264979444228609784398319631253022602950000564329410305676861258017841064508273348075481571850476583961878137440517093649419157731234328507741634339123832357087712898403924692198695205395034215293464821102708055419642850199928393140023262980916622472918134559792334049403682850119267672767580399529589730868132032413804800394628103187044424905596411561564170789467475278837823529245514466600914197112975951449467854907348089700892877943052740747236241749612601982879920678377324968730764541161867290477233065375052900002461256388243726573703749166327055162195700178230446584762840579440515818972141606580405671220845689628315170899498914274271831388782395639546826932411494390839675491236136214764095036214326809371095826493118480627416417303362141804778781518279367276959576483650537442832189649592395741719538695066300566218145272137244507380677117397195133579081573583
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 43 of the certificate chain of a 2,563-digit prime (200 intermediate primes).

Certified number2,563-digit prime
Certificatedownload
Certificate chainshow step 43 of 200

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009061970989 --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":1100000009061970989},"decimal":true,"detail":2}}'