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 '50497665041149599395969368197803589129720146372064412524232509945362018938416829463333675123957996994013212995803025404194264571166472908182480137283109951331780392747132491681704340431709802102021801870202483350353181556976106830695956286933641357284955116644011633350249775044633249256495336723939613104572419915169675020928121589611316621141443617730991354036949723531267019061920085763810403408775432139493580195664904460576418320060451461210274594407551612841904286867874890366583549342692636571984189539282082057638809255604307568092349355209068416308453166017689336590152014672753261064769175064619556123014453316537309728819643664276389164924229985256866442174012509887928625678095661080965947878883860861684017928313552102302264082902257753946235761840727767266731152445943457457142990522897837606456382625728880458438351870548469029556857798526771817939315112105234044118774886736132693174725141425026912655989485047785206831883258091851394359811075128415171487806794399777392026796717416341660536972566613467871657264227113307411852621890590285249038239352331549892087584047816377367091813203620270873014426230028646312250401168734590051821251108768176333460152668605282886486033963423345693746886913251088629961607761597938299732837265967234408183266841402463696964460637296915163307558150037669154885922040421064593829214572906494139723' --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":"50497665041149599395969368197803589129720146372064412524232509945362018938416829463333675123957996994013212995803025404194264571166472908182480137283109951331780392747132491681704340431709802102021801870202483350353181556976106830695956286933641357284955116644011633350249775044633249256495336723939613104572419915169675020928121589611316621141443617730991354036949723531267019061920085763810403408775432139493580195664904460576418320060451461210274594407551612841904286867874890366583549342692636571984189539282082057638809255604307568092349355209068416308453166017689336590152014672753261064769175064619556123014453316537309728819643664276389164924229985256866442174012509887928625678095661080965947878883860861684017928313552102302264082902257753946235761840727767266731152445943457457142990522897837606456382625728880458438351870548469029556857798526771817939315112105234044118774886736132693174725141425026912655989485047785206831883258091851394359811075128415171487806794399777392026796717416341660536972566613467871657264227113307411852621890590285249038239352331549892087584047816377367091813203620270873014426230028646312250401168734590051821251108768176333460152668605282886486033963423345693746886913251088629961607761597938299732837265967234408183266841402463696964460637296915163307558150037669154885922040421064593829214572906494139723"},"decimal":false,"detail":2}}'