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 '492774870680054824524722866330178003871430463753010934902518122957012208246542173811526994064775383216600391545459049227064798852615690127986125791470488439260266630042614223508055123021802425957631129847798482085630504102719251207448092539833606269566724919461650042674872459670929060897909582781644924773841355691208702004221470944708175245876233039496666913360732624070057134203717277787130068297959539124354768762649904050459697335782503581435610510644976839706994395764375578933871075331056289585762533848419242559958063627522536382842840034865264848232162084522020854267793705738156541049063534278517655990352268716584553959290971894225693737260778638573648068467183918992603665974185962788475981423096140114844438388869818986979765794979638305383080892338737144683510392397341207770576112905679219131978177489540368943653195028914209625984322918606987294188308785281296493037203580783692003149720991504896356178826442285261912890000720912789037218403670489056370513109624250149908530471022316528265107628410384549374569047495181669343975051700023079014782402763265314445083736819091943498139373955329338654602679050120858828432948658699787466712873564314003420018395397010769047610893517462897852683973696586700808171170050962233978873091505291602462004938991992984935111701403524111675976236751910640364348662653944765561' --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":"492774870680054824524722866330178003871430463753010934902518122957012208246542173811526994064775383216600391545459049227064798852615690127986125791470488439260266630042614223508055123021802425957631129847798482085630504102719251207448092539833606269566724919461650042674872459670929060897909582781644924773841355691208702004221470944708175245876233039496666913360732624070057134203717277787130068297959539124354768762649904050459697335782503581435610510644976839706994395764375578933871075331056289585762533848419242559958063627522536382842840034865264848232162084522020854267793705738156541049063534278517655990352268716584553959290971894225693737260778638573648068467183918992603665974185962788475981423096140114844438388869818986979765794979638305383080892338737144683510392397341207770576112905679219131978177489540368943653195028914209625984322918606987294188308785281296493037203580783692003149720991504896356178826442285261912890000720912789037218403670489056370513109624250149908530471022316528265107628410384549374569047495181669343975051700023079014782402763265314445083736819091943498139373955329338654602679050120858828432948658699787466712873564314003420018395397010769047610893517462897852683973696586700808171170050962233978873091505291602462004938991992984935111701403524111675976236751910640364348662653944765561"},"decimal":false,"detail":2}}'