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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 #1100000008676651528 1,251 digits created 2026-03-10

Value

259776853309912177013494863667332535872969564220189248254696658571717229736658106480964482037605163918307530516830756923846043970203636136995499985345962330667491963942768209045239638556344275215172324840335785934759924510057722825749382342589330688483800796710511474838328618987853619812167018687608792859609284855269342488486642895604538562565231774559440287797993180633305122750857145815104796803910616331726979740517718831605763504307233353726225098117262579641806935285378652139977654978807003447387232178457144842651286119100302264488513563701965284236848653999723192790099194671511921767682026007134418768576042648714813231150073227112626218033255157577897145199624995657457908211923580842734990478211027141511947095636833045655238447954796204244013738256347361140325442758568723045253782108699451828851349104531834636105190328290964162630576150013701840534476610484539684912097490101117350285291980107892174536506079808676083667287696165508374150033101833778730484681697468858059423351304807754772419087661196201581691844587784306730905185530251322610440050824582826432483657801229461510358040019819453400316407663514401040963548271576321514762129563398075116387674115287597049508066592261944113130106785627205571565630928836216504561411979891
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 132 of the certificate chain of a 2,930-digit prime (225 intermediate primes).

Certified number2,930-digit prime
Certificatedownload
Certificate chainshow step 132 of 225

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000008676651528 --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":1100000008676651528},"decimal":true,"detail":2}}'