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 '1613593353727425647978450639098126163618881243798915864581730499284647044664464969618156851272731014760269460258287477151588137286995913397742920620943386701055802130188008591297824020444948909530691178696209149731147807819285978115101943267710966116418441447932228714014854265675875142596415962953455834101419900313456383412172964357028135425032978136321897179835939360207490053527462154965077156186965142360155493752347570260281068442309465557793258342333757898008182700201983776824458986950999775826741463420591264844084679364945710049132661449010512192428972014796523124985452556462444194165625146643015877544818636254681662223436499408356335306895926657403405628813253462359588120967596337754524132037563831372584136405894675493110654075730064464677411611651615015696178419502737582996828617006927268557141320676230277069899413039208565353475171049697562851078283300037190683925911589250768645931511827663002115213672182347259532256007566223345943643852283809713430032452582579346743975944624568206047908290273897466081521931637950304226397041803625844514732585143147412310885226483758853739643238956576507113159434339383331951905658531752468919444358658037847335197015977905979748080716611720486040164961978670351' --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":"1613593353727425647978450639098126163618881243798915864581730499284647044664464969618156851272731014760269460258287477151588137286995913397742920620943386701055802130188008591297824020444948909530691178696209149731147807819285978115101943267710966116418441447932228714014854265675875142596415962953455834101419900313456383412172964357028135425032978136321897179835939360207490053527462154965077156186965142360155493752347570260281068442309465557793258342333757898008182700201983776824458986950999775826741463420591264844084679364945710049132661449010512192428972014796523124985452556462444194165625146643015877544818636254681662223436499408356335306895926657403405628813253462359588120967596337754524132037563831372584136405894675493110654075730064464677411611651615015696178419502737582996828617006927268557141320676230277069899413039208565353475171049697562851078283300037190683925911589250768645931511827663002115213672182347259532256007566223345943643852283809713430032452582579346743975944624568206047908290273897466081521931637950304226397041803625844514732585143147412310885226483758853739643238956576507113159434339383331951905658531752468919444358658037847335197015977905979748080716611720486040164961978670351"},"decimal":false,"detail":2}}'