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 #1100000009048528436 603 digits created 2026-08-05

Value

221279752879325249783007857711595881500824482716150008433642152930888441902013378827784600435885408324062654330040331590033889984253982711375106816395496863772185502062869587280851759977073050443118833792274163273705671788534072691961589574388421409252238760771740274498977580281656010574567400459581837784599516751135809060859636346708543356632231362946073331735069086814102597596848841771658974061578555063058140279369276206886722103140863270217913254271098020217922414445910050592608102939818557352882820936887853722151361938408584981019556009617208574597443202714186885475072424259429238866370396121
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 78 of the certificate chain of a 1,493-digit prime (123 intermediate primes).

Certified number1,493-digit prime
Certificatedownload
Certificate chainshow step 78 of 123

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009048528436 --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":1100000009048528436},"decimal":true,"detail":2}}'