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 '49604696558623915591284387176413817218088061181405923658916908475787543454560284987715531786600678040476779423693944154525821400852260564468327931764766896249242757022123618071431928467551364506091527941045704291806408746793560508524239442665526612630344305765723233214360643979864903842408139125090727775772359225477776476936683568472747734870285254565992658024401974550104822045317542572641347833121276872431074005657870356764590616357979254780740483729267220723709600104145305176903361998696152090493407209898519780572384518237947715960260185777345398395396267123845156094095933337094816909088509693902668692075945714924759524414102518657489599798084510236197124531636404949397247369734237972156563423772692171276915165906553701326396893611450178483919535206202494669831691110231053758380705871736539447101616240975702345433937141483768266187569876162911225926930004363214745094019542183106229543071281842620466522364183667343338526330685936584626323007393552161271800966492572909516435134425849692874212701003800739481924399549828038191286868215155331710445184027805576756083025802395891447633725754588581650883704072470108089157500606205027254148743214576294233066270281392505157077840566882257249540392734208163803009939778156513' --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":"49604696558623915591284387176413817218088061181405923658916908475787543454560284987715531786600678040476779423693944154525821400852260564468327931764766896249242757022123618071431928467551364506091527941045704291806408746793560508524239442665526612630344305765723233214360643979864903842408139125090727775772359225477776476936683568472747734870285254565992658024401974550104822045317542572641347833121276872431074005657870356764590616357979254780740483729267220723709600104145305176903361998696152090493407209898519780572384518237947715960260185777345398395396267123845156094095933337094816909088509693902668692075945714924759524414102518657489599798084510236197124531636404949397247369734237972156563423772692171276915165906553701326396893611450178483919535206202494669831691110231053758380705871736539447101616240975702345433937141483768266187569876162911225926930004363214745094019542183106229543071281842620466522364183667343338526330685936584626323007393552161271800966492572909516435134425849692874212701003800739481924399549828038191286868215155331710445184027805576756083025802395891447633725754588581650883704072470108089157500606205027254148743214576294233066270281392505157077840566882257249540392734208163803009939778156513"},"decimal":false,"detail":2}}'