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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 #1100000008270920885 1,687 digits created 2025-06-06

Value

2859821510383535844050291984691615238500708047660596708561425509996889739530420337339602793932865858293713077480508362608723556412872573753022539946679169717737677630043721859865970035241200337044984112596414321465431100592283142103710763165205015064272768623275432119610841884474645210416405976791950705013251354493925009177898491997466116547838449030786824448380464425586351524293980352548068162350902688551348691275720785052478051840434785180547041372206480972988466564580332618612860587896419884373529317022406153609404296552602628629588226838159386749360754739251382183710306177844964471896055348635453601209017561821732804086315912712534375355351074975627094918001701319781669914856201377929782811444258261386699247905068927168362421947602996188676654661380188659719480989602508107056029985833661129060323041796531490946377965465526172925250932080930063901926061685213480539870221343931360659371022483736110398226160780845487690986088678006317511066359242816424460823113742377522845712643345054146947637670801724544135339232268497751317142477003070583851586253503644858820209061139260535537164388950396911207795734346276997573599796582869534877827140422577847570130894088345923856849641792974260673645907155523818138060751601554823848076424459366180327672563822662157221241478320716935070513276036561618330584563653202939492086396986072919872460576351720200537442535381416523405341153862241887731661934417237612180956599521335273146144199692240750841026077367297341058551887502709074029171351338635350287527437345909121636243601391108318553891750826019148412617765083020592674716282159320877979371466659342886217617807417226848783845461932151842181605504299620581801763666808298531
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 68 of the certificate chain of a 2,344-digit prime (246 intermediate primes).

Certified number2,344-digit prime
Certificatedownload
Certificate chainshow step 68 of 246

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000008270920885 --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":1100000008270920885},"decimal":true,"detail":2}}'