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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 #1100000008766977872 1,001 digits created 2026-04-21

Value

27571454122759092997907538529901974165306246663197918635324515331222157684763520670982948710138846599695091706127609385522200383915694480606302870373324635924945010176288424056382841927203720449429922664369114095428740256058400379235219474085826473793049209936287379353053139598804384698021953993617009340441016599529983494542246483598338818902356615199726517134245224711406974264436848871753050081122157638109069977961633825268187711907260435137916688644712073648782926048859116703198306169795940634056122032319970168215741555426076051073300480694605058012866083800866140914833923896490112862242130880459570575278073011633078248483620373316950756855685285496333793440089159399077992452588241386736875562800848669341560991947623282815056562543181057033153280528371624101780705458486960819192798022349112578729885318738850365047111092724761738362023270548973689143252456514440991224709226470038361586454866518697848790242382434787143470863862723668303561065899462043632868152087233153205093091974085333
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 142 of the certificate chain of a 3,124-digit prime (188 intermediate primes).

Certified number3,124-digit prime
Certificatedownload
Certificate chainshow step 142 of 188

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000008766977872 --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":1100000008766977872},"decimal":true,"detail":2}}'