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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 #1100000008676085471 1,098 digits created 2026-03-10

Value

121675518962498157431605070650398805485712088248708815074848763139631154136444982548661501243926707627195116387777479681889950152028520141266923126409926554533921575351824854305272657708849621273308514815627504697159407666708834334341408798288626696534240671163248084054421046291203237718383856773167392900148174314932353889901554117724684512946696807349652923460612739361061412099249038237557221540642275752119001291884384991965009178516029609044985685299243658059379043833930007143268287653986854772285601309412623136267775087195131730054787160753363700301388235034924947722609809286975817930359214561849681465522820516013680075365794017073252371265825673303739748242785159235494232629811731094583166131649403742670738332689128314455729498631137664341729530936680514438396601438793774181630217630514345981638128678570462990569334931697034280628167850252901117988882231635198293239714742534034713266854132458928679926678562770006447069090271002371970522788488712354352021348350682890015096802999854551208399193972967082483178629592432905916501100555467205000266483582309782560276661619714210807249
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 16 of the certificate chain of a 1,250-digit prime (141 intermediate primes).

Certified number1,250-digit prime
Certificatedownload
Certificate chainshow step 16 of 141

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000008676085471 --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":1100000008676085471},"decimal":true,"detail":2}}'