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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 #1100000009091972820 1,289 digits created 2026-08-18

Value

35597598770282468838762648259430156967150789613074523068441973822358711732917793087179054028301806514924601314568057775606793239937123568529831776079821855621353576400341367199116134109499619597095460334157833712503101207249870620665163843538111711291146244686254418101545558311183910507193943232153909752917166286861287001075254429201448751288305124600929585079906304164021249953411224671226568136078832776359925305273334346888105283130618838197654739473114476046102910033233076238147667534305061491045956330307249373263721400216061119879982191074018582732047046164071799643308846653122195102337749037861887043044356690166448355543638634068066878165923167206207280324099301286800684319224205536731419809348627036815839778853497585833592966634519687476138053010387583305953233656767772832398495272034961067046197168997395077689749465725188239093922161189075780182335406075844284877387889888636519268317498496889323706552910874005178352341581182630775282212194429256287776544469809115145014947128640490928079904365947475114475896936532938873778779187972118482676955944438483416056305777227136618744091114738469523414896061669581246164328432946417319482612812093826557911647596818108204738612978862251465075962300712795675961139004615623393213565054782318875029538727654874359416406256297193
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 67 of the certificate chain of a 2,091-digit prime (169 intermediate primes).

Certified number2,091-digit prime
Certificatedownload
Certificate chainshow step 67 of 169

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009091972820 --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":1100000009091972820},"decimal":true,"detail":2}}'