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 '2854342045950871300451310412566239309922912676893287074892240517239737275263831946770309463321128013743647032469460431759377526385424566730068015694221484250681304244447087855953368332312937865968044195201112605253208468675020591166038792198643717951699603382210086319088965196365874167302252894844973641878488655400757426966342503158359552339796353056658149772148742538316868751497252497529000415086135646595193675138069907665584145625053799421492314238828170465580225892876684708531055415040072275159577959628117191258278820057387868756506283660454864997898182213606421025251151874580846373961209110458425666194067203013146069051746264421004145120574810403589950616718640669456229246931259701420095749519204244808909367463153341425053544744165032660822381899619684528584822585147848736793562434681472621996537010910186967479765522088283411512105688638671629492429474509764615300866856257546405443172295980293977001594166756027961858894867661720587121585216081832978454792517745433883724399184854184829564423567889619437592407966545334542162120814467778821608675905034250664973423228587565667677828134807324388241287688504669639526339424394965688051287465450235354923477011790099323283493879263354575832862876156920160577157844300807142689610590897912382292335471815098278406623885701001224472302745623396889963331012422561705461851835701962918377234863069105013368402440122373848559884762422833846515303791416945016331489547433785844944110009409806578182863074247373045661693598733038842364828795412759092427210841646194886496534557092946305065732493292918270877460689940861687871168004102680060139665840400532115329245993711036895443815379290937' --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":"2854342045950871300451310412566239309922912676893287074892240517239737275263831946770309463321128013743647032469460431759377526385424566730068015694221484250681304244447087855953368332312937865968044195201112605253208468675020591166038792198643717951699603382210086319088965196365874167302252894844973641878488655400757426966342503158359552339796353056658149772148742538316868751497252497529000415086135646595193675138069907665584145625053799421492314238828170465580225892876684708531055415040072275159577959628117191258278820057387868756506283660454864997898182213606421025251151874580846373961209110458425666194067203013146069051746264421004145120574810403589950616718640669456229246931259701420095749519204244808909367463153341425053544744165032660822381899619684528584822585147848736793562434681472621996537010910186967479765522088283411512105688638671629492429474509764615300866856257546405443172295980293977001594166756027961858894867661720587121585216081832978454792517745433883724399184854184829564423567889619437592407966545334542162120814467778821608675905034250664973423228587565667677828134807324388241287688504669639526339424394965688051287465450235354923477011790099323283493879263354575832862876156920160577157844300807142689610590897912382292335471815098278406623885701001224472302745623396889963331012422561705461851835701962918377234863069105013368402440122373848559884762422833846515303791416945016331489547433785844944110009409806578182863074247373045661693598733038842364828795412759092427210841646194886496534557092946305065732493292918270877460689940861687871168004102680060139665840400532115329245993711036895443815379290937"},"decimal":false,"detail":2}}'