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 '2499064066056207540952760270516125628164064590752065809087360299669290713239264563921452023240593799188053827396346033456289676006473411427099517776231369083128397499540176365610488575007519637998788825352872900745127385303075874148250620477002557998491889925214258141687457718439570051883469403015798153479379801575835994169606568598516047742871349100854781877617077518407050967288726416020035326575208801228526661016403243283432988993132397935828828669664209900066712716844729758866980610396950807651323841237008215515334702060873911441350898518022096770275679767932109948343544866454163071324731010227789695789335240677750374266542316043524364784978677736552599457528369561528680118273813452710202886673197085374356078291766267717582846342155648234743172167264574452601404075114797291791493732889419159115304053339014505607857285743322221' --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":"2499064066056207540952760270516125628164064590752065809087360299669290713239264563921452023240593799188053827396346033456289676006473411427099517776231369083128397499540176365610488575007519637998788825352872900745127385303075874148250620477002557998491889925214258141687457718439570051883469403015798153479379801575835994169606568598516047742871349100854781877617077518407050967288726416020035326575208801228526661016403243283432988993132397935828828669664209900066712716844729758866980610396950807651323841237008215515334702060873911441350898518022096770275679767932109948343544866454163071324731010227789695789335240677750374266542316043524364784978677736552599457528369561528680118273813452710202886673197085374356078291766267717582846342155648234743172167264574452601404075114797291791493732889419159115304053339014505607857285743322221"},"decimal":false,"detail":2}}'