factordbrpc · fdb
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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 #1100000009057729704 1,167 digits created 2026-08-08

Value

251585778709235670830826927482643733844242587085555512504820506700109606235857487520719528879804010215903171148529340403344356229650505487869823692279073237298504271283270524444783181331889816917600356601786800624086111510533447442849661892203064274208594813939049162967432151600671320394475074551157406024977194182019175598498912890294331207292776655765535810040212906028624660228917814761774035014285924035460466126603829692017185689495939607247414080985568089872140600953473645432856367892641021692702243485151564636429435669224761033236381755006565807648453082408211671450579680451518528679985073629439009434864128918662943024617480262837900997413198240632344203702118252593097035913124222885284931743033726682780107682709455400180708000675519113752814764726046328264676187060785410474392351960769655836810909591577182715207371372674425927391269957764801712516613433929712641454193745524566703283531993885013286749031386500625982172803632338126426532962104503861033568528732155467185236168295538998805101410182385688471071349077847660763167564264850021451617626775507763371501602173839503007922249355782444287223010695965781677761098435665167569888105911007160713
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 42 of the certificate chain of a 1,672-digit prime (139 intermediate primes).

Certified number1,672-digit prime
Certificatedownload
Certificate chainshow step 42 of 139

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009057729704 --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":1100000009057729704},"decimal":true,"detail":2}}'