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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 #1100000009065129825 1,053 digits created 2026-08-09

Value

418908027281633425026086008117349483913348749828489997798715792502465658100517429891947425392996092733386714224071131412497365132204698639444348438015355761638426996994433123632142641867005625300616269257819708605667725433248104045634376755342126461271333091172335489876769216659144197880971723527301888724109863851261668167290085888045218746596029963745905002366824082660683726779715363417180903168460430437615806617112359808438170592742697897915492252769394734019122819350287898599275114840797407675563269115469934577573606419682281870723467892835575413708776393053157509397851056539029760262089856362126593925744138572556982435632975834086989450793914051299253005093812277437125090668735249234196570484410507799957842960133584047272737350178544511841172428787968049872084896606464038530176448254774305666685509203863787383397392090449505472447504856325113521549942146173707945694868605052155568773498927732500426931609637635167861056657329952616782236656155390720066031433271085433162800597754146612862656893878153076237504692518524737625371785462303
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 111 of the certificate chain of a 2,485-digit prime (189 intermediate primes).

Certified number2,485-digit prime
Certificatedownload
Certificate chainshow step 111 of 189

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009065129825 --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":1100000009065129825},"decimal":true,"detail":2}}'