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 '315752258492949626635827910674541116749149634036155189813137469632541758435684231676704891211531744797448847337000699867529356257058610211084259252102997522325856878946941680804819744650319313578734570003392493669879857035825765930082325289953431356179693783879495999409505305714886234574415715340949362962342243796181209721736301394715511099706996662759607730292195335797610927604744882544070333107392537643369380969371670037566677335649685303918767531237473295188214675210598145945457185971558804682601049396723898492835187229311257019059420679937830778055396881385189634160363919981563759045735535000202977739575051523889506955935283025590647138055128714605620275580548098131872068407008799702032130026899062713677207192180204208562592963651938711850838276622174662947176949882150874140377221976660242795684919896937973489831614823197215933420805321961782663604105349532443628172444140121425885101615033982259' --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":"315752258492949626635827910674541116749149634036155189813137469632541758435684231676704891211531744797448847337000699867529356257058610211084259252102997522325856878946941680804819744650319313578734570003392493669879857035825765930082325289953431356179693783879495999409505305714886234574415715340949362962342243796181209721736301394715511099706996662759607730292195335797610927604744882544070333107392537643369380969371670037566677335649685303918767531237473295188214675210598145945457185971558804682601049396723898492835187229311257019059420679937830778055396881385189634160363919981563759045735535000202977739575051523889506955935283025590647138055128714605620275580548098131872068407008799702032130026899062713677207192180204208562592963651938711850838276622174662947176949882150874140377221976660242795684919896937973489831614823197215933420805321961782663604105349532443628172444140121425885101615033982259"},"decimal":false,"detail":2}}'