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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 #1100000009075005898 1,137 digits created 2026-08-11

Value

225665852683626745100938080797684528877335755399905068342614429245341503510379966848897238671436325872310649104299442502832642071242640181690948644508351114951243165997494081841622282751073700559645251663201229230306368648029945752526519761130188861797959051894414567561991216843753051174299885961382010928046823722280471810451153670919858874695889859583535233636747648858354537235501204446744263829363903935700668711589179110753770907117509581120486221706949611944053208379682045234921411528298884216549859689785039811799557253193392099108464649796089654163992216368719168205688961349764464131586678247995538008200347915953951273601226016308314729448849482178402763570500222925028128892186423880418451368754292759820010451259027363940677853153514341116408826421851153294738341214200127070091065396355061321300464786920108912583886870170200504167349050365949503920044598145007591037234909106685158596349465216921193731944096280930066031980718866581641338024468744297987261671448475057162300375795095500179467854663212061832172266795396835010668220442640115644296647418988392428041271726436729178414331869527613814074226507345682953742013
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 56 of the certificate chain of a 1,797-digit prime (143 intermediate primes).

Certified number1,797-digit prime
Certificatedownload
Certificate chainshow step 56 of 143

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009075005898 --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":1100000009075005898},"decimal":true,"detail":2}}'