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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 #1100000009048661408 1,312 digits created 2026-08-05

Value

2858335967970689665893836880003768382469515343306377159197528202451091965817196108591253237525551273448742434094801284366729783540020517210059754842224332366251366209614995510897145100808533529177487530162403450847202341286475117449880910977959130885375689315626988399392493114000614251911910909128431930140956047807625527551492275614554802658623517505349501938804946044809488976810433526221100731858416071192940361193678444500259488264003253688797309240047893669777153139927914492774868441160785323437440674802434686862378232220340280087494421726650638407337336894845712032088515933930770154440306089736261648833976353269273390566556131199919034550281076249093025892146018544419367553815471764608369401677791173588195091811140804094128891478850391082300225472062095309425540785425499031643919417312721187235106785497767040878743643287812937601046285541696248411969960905440549145539849922551055707546476674634835514061423521742383460712293937136409586906321772137731129399469069191769087240865134633883073563839012683922399197031274645606497034452526331501294972965856259902451330875277911967832891324814727074739724390704087787347514451078092294019287105106211322799982666639061243518813188120319102426038911340733504499111424323214834096533711942706427438196884418715583598901844037521137425295959508542376129
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 17 of the certificate chain of a 1,499-digit prime (125 intermediate primes).

Certified number1,499-digit prime
Certificatedownload
Certificate chainshow step 17 of 125

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009048661408 --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":1100000009048661408},"decimal":true,"detail":2}}'