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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 #1100000009055505825 1,567 digits created 2026-08-08

Value

2786986695543080299718119022313958732686362802125255427175491605226663542356599974900830005625266877319395905268221950078788553889108146749758452132517465193596306697351306852698393819674751194190073879792554341285866912260413888188766501658542210998721924969423249917371304867074924972701007726460394405286200242077789599014616590833372547040016903436054070376190182021193002292534537587012242121839111229474076030788705058204833601635956323153316701050338946794109314566327015955710270575368386028605961633326694337205542271449235154510061117923827651415207025110495672600746269038425131539900640964056761179006606767998697803027354936666020710960731887296310559740508007549503269491807703847247967958661995018074931633911638870244098263455146598782120022583889827499358390084207359345006965072087232679031023812494780810333221518544008749292999684632806850578256987959568293553366931082814751052118188390306390169963267455642967488514204197197596630086340995986273615803699360526220216033390286201807416239336516960909696860495023854528738741578374877561027239472929236096566389851282315576234476951610107047624772712897439981005995755867150254028821995582622045538919326389090036294087216511004702761194054379042250974027636191709619690858109554847402881330143509431509460220679035301821711494430027942050383227209076862065720022753524058121770442812163049986407344581228487026265536602387634263024139194955174044333961699209701869031916261947082068773575433982017060965091905869302576115889796632286052305859468197659987437048180910516524538233906557301184233419
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 55 of the certificate chain of a 2,227-digit prime (175 intermediate primes).

Certified number2,227-digit prime
Certificatedownload
Certificate chainshow step 55 of 175

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009055505825 --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":1100000009055505825},"decimal":true,"detail":2}}'