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 '57215223631236266482596381996106439654498547898158344181351367933639351219294839843437465495919049793144577125013467368690480058678327206447871720500103447090481359499211748326644782312372410516594132441814077077070864238334411696698278862235295372031774515431794102630054530485364262305385137008322005844161275097857267951567906071585920260463387311508057135243223642209562652178289842242286546804875229434609034160965774853035156535169878598899355576185144701662004307466252564888388212582177358016235370867507633236600091610548716067045322424776390827229774442452844468713737444424931035592460195547904354846109657719315666156946947662524599207346800773511374150273282087556371073145211664126913879455058505240700932595683224728042790033485093047415703771511294657975360313413875749112338888176240611903626349592352257111519395192122697430202335280526208023411864862606194743660786240635046802550507425325507825846502317854024033351648950068490929910573070492444617603812730292483456922214062679672463428271062579629452889386749577072233527874284573342598790970849084261136308357433881097259640417782536458872593373234734053679837757400562812014442839771795011425619805812501451267797488430442318565196114642067650144241189374942888070402852460147435485035666352624104017067973211413540686847441980585494518129777968863' --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":"57215223631236266482596381996106439654498547898158344181351367933639351219294839843437465495919049793144577125013467368690480058678327206447871720500103447090481359499211748326644782312372410516594132441814077077070864238334411696698278862235295372031774515431794102630054530485364262305385137008322005844161275097857267951567906071585920260463387311508057135243223642209562652178289842242286546804875229434609034160965774853035156535169878598899355576185144701662004307466252564888388212582177358016235370867507633236600091610548716067045322424776390827229774442452844468713737444424931035592460195547904354846109657719315666156946947662524599207346800773511374150273282087556371073145211664126913879455058505240700932595683224728042790033485093047415703771511294657975360313413875749112338888176240611903626349592352257111519395192122697430202335280526208023411864862606194743660786240635046802550507425325507825846502317854024033351648950068490929910573070492444617603812730292483456922214062679672463428271062579629452889386749577072233527874284573342598790970849084261136308357433881097259640417782536458872593373234734053679837757400562812014442839771795011425619805812501451267797488430442318565196114642067650144241189374942888070402852460147435485035666352624104017067973211413540686847441980585494518129777968863"},"decimal":false,"detail":2}}'