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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 #1100000008674994840 1,955 digits created 2026-03-09

Value

66944346317263249135464578123444016497283220981097246269185899126896163437014267268021431464500362081095487610679857523446846286625511809429410170008771875551624271141817905037942347968970120051713492861940281004520960952431605875410367348736192715596468607344393500397965290321636021255746642357249122191760638601702291793940693444299700882166299445770966692018429423318578142946720580755438099202430510575845124139957986924936137531353915239127946700113377081476648047110868133048804340783660657092191057515753586939165956257804234344652802191145542109690206136010204093388503870109999212042985035076366500182609970200630424317507552109528592252185064260792441714576804578672972612704142817729732380282280300710563543431825755295731882376122596403934480746611606436142853289922514270019896187186016993238526013346853379289018656949420124195015822796223201268978771751843060025645715735206037182253390178913652521644477002004981688801372852218350989747581401822362216751015115164109244949321438599743550138759709620647201128323137682535084625943182207670589747676910450879597834881978096923563216710792021246318588865314217149328733647767893709665461613843388724378688538747116518761718461169706265553235217137246324204285868063642381052517073153542348623210929167344559194148256294267731497931210214272258815401701311795327656591908138429718700717981640789038961873390836308013060435910850704034416163258545286498643237921020318129094926656130237396864790241223359193104393705591902501355727692521250524048947713835592924668790962777591094973705952728955927419442107465792671515389516302822086886047219107278524365036342678965776669269917239654929860873188946377724620510467222318532748628467943170469314657554044828649140858805401731644658922146828163499307543964082489932883501770365445377660877296488408897873609146869701387302602195447066274758474278539921347420716108965653848207650171456575779233019137336415060680594964181206656694838330246950131
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 63 of the certificate chain of a 2,906-digit prime (166 intermediate primes).

Certified number2,906-digit prime
Certificatedownload
Certificate chainshow step 63 of 166

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000008674994840 --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":1100000008674994840},"decimal":true,"detail":2}}'