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 '401103527230859024395334085122683317675965870288843887618884566580595772392059277609096030802632994161920553294797814488760358700436402369597054741038376495699117875381083086337862348146879576381980659190637184606711504643710260994047776527285748412398391757580595297238880597617829387256337529827106873851336356430978007801835592509807985381701139814298890897388962958133152952644908020018380532646885134256783429154842122828503768869469809190726052687475629766646337282634915022308646042995735121552570294299345207981289837143182695908187019911954983418088637284217397083189548780733555336745850413078101316228762529503105366106926029406790873801289621944698757698347340176663832707593589108191991427959933389376492707677340609195351050298470392757734848529128030297158001023757123394010399515793401251315472189043813667771850646962010320025045094031190595981789922615416388760455381292544052237051056588904622024274214649963285496391807592249627170767546521667631423452120190451222683528501733379305371045930170309762820125887306275384382985063814276784510774437480664829308640384940124508822073595710303922662573228111789' --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":"401103527230859024395334085122683317675965870288843887618884566580595772392059277609096030802632994161920553294797814488760358700436402369597054741038376495699117875381083086337862348146879576381980659190637184606711504643710260994047776527285748412398391757580595297238880597617829387256337529827106873851336356430978007801835592509807985381701139814298890897388962958133152952644908020018380532646885134256783429154842122828503768869469809190726052687475629766646337282634915022308646042995735121552570294299345207981289837143182695908187019911954983418088637284217397083189548780733555336745850413078101316228762529503105366106926029406790873801289621944698757698347340176663832707593589108191991427959933389376492707677340609195351050298470392757734848529128030297158001023757123394010399515793401251315472189043813667771850646962010320025045094031190595981789922615416388760455381292544052237051056588904622024274214649963285496391807592249627170767546521667631423452120190451222683528501733379305371045930170309762820125887306275384382985063814276784510774437480664829308640384940124508822073595710303922662573228111789"},"decimal":false,"detail":2}}'