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 '52270898428091025287808518190693726918300054375901711303332928237011031511738034700494254767206585976343027958247189125887878798435498470466565488914591392062349716589119483376290500831465002243828008638245738495302937929597383880480472109063913747697102548854815852476063209077673042355414209157995179020205914391080685695179047837379752313278432876047802239820463391096688333113038492538787008115064266526759969351492895451604492070930221117338307221186190441698163733234767374150526880638216309756712862384504398220066787129082760478714449255030117779883281637388921375321741176960089194189846253748369573839940660974973826839922072799817355952951868994120318698751734176989136401471673835052399465234833024062378063033410339378452216028726913592487619858482754760280656378632283255072241568692140227772306509308888956631573824733988020405032884702659881026017018129206140648030951766482950810568412305429384261482354311' --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":"52270898428091025287808518190693726918300054375901711303332928237011031511738034700494254767206585976343027958247189125887878798435498470466565488914591392062349716589119483376290500831465002243828008638245738495302937929597383880480472109063913747697102548854815852476063209077673042355414209157995179020205914391080685695179047837379752313278432876047802239820463391096688333113038492538787008115064266526759969351492895451604492070930221117338307221186190441698163733234767374150526880638216309756712862384504398220066787129082760478714449255030117779883281637388921375321741176960089194189846253748369573839940660974973826839922072799817355952951868994120318698751734176989136401471673835052399465234833024062378063033410339378452216028726913592487619858482754760280656378632283255072241568692140227772306509308888956631573824733988020405032884702659881026017018129206140648030951766482950810568412305429384261482354311"},"decimal":false,"detail":2}}'