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 '972494122228142109110086346493759682149486446655206177155410608358083413225400100322485880707686389496544080569808976180206891999298408476878678131144937600963391416235966990854484521617594237908377919670153073245184710306015180479676156154087465639826936097942962851315330795612779844327972805209630815944129631478976361221518820075863026949936784676197995873424445966289693169817620360341785684905708763998993547660758152246631705028257658154468141443416921909329607728161741100701412803554208599832788055304642006035229668623493788909028365112158314527354362884361912409626644234426225694918014550482015832502949125896213205272159552087978625292994538259338729216040705753645323705420700458181475377806345519953998024284897390004080497088429170041353396037211349160104069318982717553723941945793132690001775759787581827943885234309205283242582030657319229281871311922380837684966403387619805480135827427763150542494753346601112643786151163583050026800537221127571875091049210929268974715578077142633077337521289554597387096323174670679192947130923126480720794949417555966665113521104471304237461764280811618407377704452112543755331275696551638658115876663706600527648982688454462027524366450654922284799099' --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":"972494122228142109110086346493759682149486446655206177155410608358083413225400100322485880707686389496544080569808976180206891999298408476878678131144937600963391416235966990854484521617594237908377919670153073245184710306015180479676156154087465639826936097942962851315330795612779844327972805209630815944129631478976361221518820075863026949936784676197995873424445966289693169817620360341785684905708763998993547660758152246631705028257658154468141443416921909329607728161741100701412803554208599832788055304642006035229668623493788909028365112158314527354362884361912409626644234426225694918014550482015832502949125896213205272159552087978625292994538259338729216040705753645323705420700458181475377806345519953998024284897390004080497088429170041353396037211349160104069318982717553723941945793132690001775759787581827943885234309205283242582030657319229281871311922380837684966403387619805480135827427763150542494753346601112643786151163583050026800537221127571875091049210929268974715578077142633077337521289554597387096323174670679192947130923126480720794949417555966665113521104471304237461764280811618407377704452112543755331275696551638658115876663706600527648982688454462027524366450654922284799099"},"decimal":false,"detail":2}}'