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 '9742547378792333843500991075522314473391196693495455335646939513755414254701883246467701759346945213447719860632182383875084617571008319679614697555187289681790638667069366824231611466700126056324233457532185257060366767411421915781417223825649705950469500292513176738085907584750160639055593514179050639218705837736752772870885530467522894308249345923423669010832425155040527860449213513860735346354428698694981026142253957992994414631298518871082924694296829045218750702118325504959723216820702265451485985838647502699173430413207691043453837464474605399815994156081042402143487624856118977387494667389319436271674171601847670138071978492770856151682193585942782285691232419' --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":"9742547378792333843500991075522314473391196693495455335646939513755414254701883246467701759346945213447719860632182383875084617571008319679614697555187289681790638667069366824231611466700126056324233457532185257060366767411421915781417223825649705950469500292513176738085907584750160639055593514179050639218705837736752772870885530467522894308249345923423669010832425155040527860449213513860735346354428698694981026142253957992994414631298518871082924694296829045218750702118325504959723216820702265451485985838647502699173430413207691043453837464474605399815994156081042402143487624856118977387494667389319436271674171601847670138071978492770856151682193585942782285691232419"},"decimal":false,"detail":2}}'