factordbrpc · fdb
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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 #1100000009043400855 385 digits created 2026-08-03

Value

8474237113733337841838338698539491102868200532192174114063602108103223408256522344774117198927857483838791346849494748838536463335569458000109615275886723986532876761020122223876131800013740886530426362062340448454010907580468791403280479723451133023188175416041670039772844427606384473871504586678298446226424469295844794358537687432882629587174097273712631900986116141586537169077957
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 79 of the certificate chain of a 1,359-digit prime (108 intermediate primes).

Certified number1,359-digit prime
Certificatedownload
Certificate chainshow step 79 of 108

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009043400855 --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":1100000009043400855},"decimal":true,"detail":2}}'