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 '25334513084976322362375446510795990557073293153760379695863542008405147662494883946471836516203860692572076804396423218907368421635087203659065722878125763857469041467111829782552923621042956768926249697263014516537453893070502433538461904327452599866641368680522841625130718728849236342533206555189174864003479653790263491178801625716596345597703504225291387840435147138196624285455229603643432056471088529726615498666463454538399546812647822979134583472207357064268984459787631908636825584910363445771414895513113054150938795076153103411579784036402353530548851886777318489544804017383519742380865256160331821002830104893927235850483846525233038444145868553295639685395993755959777212555843171423521585513090152512114057170670678174823363198223312528150887680099607437010797925045606619982993468042904079635972195528787186211753367408720346976571042056528463239571578437714191008659596738591533300757770574440093727901506400249623545934934358646676650621661180360499488907544129051763451989959769882613877231276818894206163716194065920533091110306823877174074110938377597914708690876650967319928192259231732273940886635936273597725004770846277357885528876286629629916091070896005581692262450502972356019720161347014095945807026681659389243970617620962830569881750123246928431633918005757725903' --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":"25334513084976322362375446510795990557073293153760379695863542008405147662494883946471836516203860692572076804396423218907368421635087203659065722878125763857469041467111829782552923621042956768926249697263014516537453893070502433538461904327452599866641368680522841625130718728849236342533206555189174864003479653790263491178801625716596345597703504225291387840435147138196624285455229603643432056471088529726615498666463454538399546812647822979134583472207357064268984459787631908636825584910363445771414895513113054150938795076153103411579784036402353530548851886777318489544804017383519742380865256160331821002830104893927235850483846525233038444145868553295639685395993755959777212555843171423521585513090152512114057170670678174823363198223312528150887680099607437010797925045606619982993468042904079635972195528787186211753367408720346976571042056528463239571578437714191008659596738591533300757770574440093727901506400249623545934934358646676650621661180360499488907544129051763451989959769882613877231276818894206163716194065920533091110306823877174074110938377597914708690876650967319928192259231732273940886635936273597725004770846277357885528876286629629916091070896005581692262450502972356019720161347014095945807026681659389243970617620962830569881750123246928431633918005757725903"},"decimal":false,"detail":2}}'