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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 #1100000008678210708 1,080 digits created 2026-03-11

Value

375852510471530040381178207356946586977767245284765123343031814614361941085789026717064893897137137964229550303960962554830758873473380732353780819147332132062474008004409505040697259039064983081148986653925316627628656555111341306270252658267356678322590821759493525758759756422504668024417415830839656573313619578839232885550812042424654176061090496741483403689630887658513903346369073616913517459432396855048798828206357836360818506603790831371641560508653620823301480499806421517089599817716984262269148372745856381269274421127500768701347424363472582276138463389993746323060160091467931065277269613036040046246412635884277693717330446290092185749575730824510035667113419986835756724892915434462255892814887173956580114943988969816722399201074032833162081895412929328250875000493825830582238920460208463760632720533889584208497479617182747298359581737131569212735856251732110473285031872594483164099067666085977828188305161408460937763391648177204734202400406621836186026140330309385603836863410718873472854805440139966439147874596369209356747442009258026807325028230507289921
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 73 of the certificate chain of a 1,843-digit prime (185 intermediate primes).

Certified number1,843-digit prime
Certificatedownload
Certificate chainshow step 73 of 185

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000008678210708 --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":1100000008678210708},"decimal":true,"detail":2}}'