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 '659960150001227124245019332746485432779583280793147392235016346978525599693945443156446760143714066172955398898466747162622668362094030469450046373951007049608617066467755047818674138668621858175651733042312465423184392383087835589450718511427163718946229749826199901196611963338367649649242840498101782457267930465428393425030895070576067716542030960258581584100792643895501973814460732139260362104788044333975844321182001399748422833879163006314575125632038609177187104631100136482280893199374783887840013313595751775738423320112854457616335326369360459099524071477160837923155969890216257330411032628608241961681578753812732000792988188821010643776142570500262998791039028439206361014832067738027496053951108411837138004967885990873219734193794330373872493820352652294845504922936987004545225703438150578335128950000656600904515280998218469183237480302241170991899423134846415452271115607151315064527251812720179997842900387529906291774057005080304472360617774757671352396175772211450241679706397930628685802938129155554318087370176416792399420493378729489190996460796821305523782039246849203688134606974371150183968945071500559760088404806735364968624885526527232318142713348200121294532708152523067721461' --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":"659960150001227124245019332746485432779583280793147392235016346978525599693945443156446760143714066172955398898466747162622668362094030469450046373951007049608617066467755047818674138668621858175651733042312465423184392383087835589450718511427163718946229749826199901196611963338367649649242840498101782457267930465428393425030895070576067716542030960258581584100792643895501973814460732139260362104788044333975844321182001399748422833879163006314575125632038609177187104631100136482280893199374783887840013313595751775738423320112854457616335326369360459099524071477160837923155969890216257330411032628608241961681578753812732000792988188821010643776142570500262998791039028439206361014832067738027496053951108411837138004967885990873219734193794330373872493820352652294845504922936987004545225703438150578335128950000656600904515280998218469183237480302241170991899423134846415452271115607151315064527251812720179997842900387529906291774057005080304472360617774757671352396175772211450241679706397930628685802938129155554318087370176416792399420493378729489190996460796821305523782039246849203688134606974371150183968945071500559760088404806735364968624885526527232318142713348200121294532708152523067721461"},"decimal":false,"detail":2}}'