PRP · Probable prime
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.
Is factor of
Primality
This is a probable prime: it passes probabilistic tests but is not yet proven.
Build an ECPP certificate (for example with Primo) and upload it - it is stored and verified locally, then the number is promoted to proven prime.
Primo input filedownload .in
From the command linefdb · curl
fdb
fdb number '339589781703819296117826822311432561583111565146643020694346487007818136241656411103429454165218782579889502399140689335946389070317371880045086497929593240978441315031441440865738179233558465310153426684842523698689632094340074504838907868141719924690931698851104928194919417254605315946683783536618638863724365602332559261922859604032496189752238902621946132843881426378721656213020041363568109948112886694748003962910324100612580302830098827643506799326031348347600871696706275923374956290214737639038777867610415277455283022786315267540681283655032795848498005886693329777021652173983399016732899622107664057500419229160396273608805144700939245043997563820780155288500948044955907521304207162507993987969953524705100509257150583721925680165310413171167153524498381141114841744412998964637347478765213697162565130413904169027617993587678325655869724926621557286854263774598596338054585854690542952665325765472127154462227849973146192739002705268393155177131597274468328295332795633202839637091657475268787872433202174869029265036884231360197381787272372548754609931391473082783821865180287736087114064084763896506913903243' --detail 2
curl
curl -s 'https://factordb.com:4059/rpc' -H 'Content-Type: application/json' -d '{"jsonrpc":"2.0","id":1,"method":"get_number","params":{"target":{"expr":"339589781703819296117826822311432561583111565146643020694346487007818136241656411103429454165218782579889502399140689335946389070317371880045086497929593240978441315031441440865738179233558465310153426684842523698689632094340074504838907868141719924690931698851104928194919417254605315946683783536618638863724365602332559261922859604032496189752238902621946132843881426378721656213020041363568109948112886694748003962910324100612580302830098827643506799326031348347600871696706275923374956290214737639038777867610415277455283022786315267540681283655032795848498005886693329777021652173983399016732899622107664057500419229160396273608805144700939245043997563820780155288500948044955907521304207162507993987969953524705100509257150583721925680165310413171167153524498381141114841744412998964637347478765213697162565130413904169027617993587678325655869724926621557286854263774598596338054585854690542952665325765472127154462227849973146192739002705268393155177131597274468328295332795633202839637091657475268787872433202174869029265036884231360197381787272372548754609931391473082783821865180287736087114064084763896506913903243"},"decimal":false,"detail":2}}'