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 '272198397265127452321291825761063964025232176952705047832728357542824839684627135451482746110099957747925872008572811130198398892487526172656236754354023583855157748311903192738359602598122940478268430059038536289886059456124930383171500012064677887876396158605698214334837807520961467545032304515547929141492721876575516982556012639301925651636180731115111258012389090154487390864035378663538213957453177205828577539829061476088022785286098428598861114895049653763290693208881087708811492033914355790834317084017420202056891864074331469102853014825437098157392748034789573250421541440525519755939329513186628845684281716945315896024465286253381613044061449026874907007627121312949544642605299631572610537491117296602211117543117741963255297647774281998226780664681731001788279819110705104688822769269164452028556535938503457577512255476671651867493748036108236571229414264836687487094429574008477945560992064525712556286274687528561985051643960492766576803337561015334886299438608384670704239887298925569134026868106092753969035838374278495153891235129114295324500470918925613025435365937436974003240168615926016068637256316956699203289958291392194588909846863169273116918834417978790834330034836202739397115605271724522854677726581429013886917468619279444050648915741545957233296471433969364186106417218599334103090860989217021999220599149812814669055092544225453229405600437078081575439215248561449967720273498020779523063341115813713997364145126681576528597430208257720906968164133531628664580483001776181637473104047727185033656839227105695375450499948990882489234452394276936102245736531563411328078924043580967692387437201055206613187597' --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":"272198397265127452321291825761063964025232176952705047832728357542824839684627135451482746110099957747925872008572811130198398892487526172656236754354023583855157748311903192738359602598122940478268430059038536289886059456124930383171500012064677887876396158605698214334837807520961467545032304515547929141492721876575516982556012639301925651636180731115111258012389090154487390864035378663538213957453177205828577539829061476088022785286098428598861114895049653763290693208881087708811492033914355790834317084017420202056891864074331469102853014825437098157392748034789573250421541440525519755939329513186628845684281716945315896024465286253381613044061449026874907007627121312949544642605299631572610537491117296602211117543117741963255297647774281998226780664681731001788279819110705104688822769269164452028556535938503457577512255476671651867493748036108236571229414264836687487094429574008477945560992064525712556286274687528561985051643960492766576803337561015334886299438608384670704239887298925569134026868106092753969035838374278495153891235129114295324500470918925613025435365937436974003240168615926016068637256316956699203289958291392194588909846863169273116918834417978790834330034836202739397115605271724522854677726581429013886917468619279444050648915741545957233296471433969364186106417218599334103090860989217021999220599149812814669055092544225453229405600437078081575439215248561449967720273498020779523063341115813713997364145126681576528597430208257720906968164133531628664580483001776181637473104047727185033656839227105695375450499948990882489234452394276936102245736531563411328078924043580967692387437201055206613187597"},"decimal":false,"detail":2}}'