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 '31662157851564532221744488224157499148911060774303976337000519218986094069323106635849416706092433037992052969949471800105141125350159704952266932145403984304096468542830305967235526227935277705682434421246063083665889198518061920449098689922409118755276315781439496604112355560421381130521184502192346447636453451864502494349049947594849581223719803770919074031751427908212224021625442836091677289323841624993286562923367170185665645950349542838767481275979154783562050091222995574484022802233361867694555539139168554520020679203292329831278080673183615525895844530971224516505332535440578377767738868572224280952876771243946970015606411787968795822928755381359894177877727838016969511310866923225589747702472801' --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":"31662157851564532221744488224157499148911060774303976337000519218986094069323106635849416706092433037992052969949471800105141125350159704952266932145403984304096468542830305967235526227935277705682434421246063083665889198518061920449098689922409118755276315781439496604112355560421381130521184502192346447636453451864502494349049947594849581223719803770919074031751427908212224021625442836091677289323841624993286562923367170185665645950349542838767481275979154783562050091222995574484022802233361867694555539139168554520020679203292329831278080673183615525895844530971224516505332535440578377767738868572224280952876771243946970015606411787968795822928755381359894177877727838016969511310866923225589747702472801"},"decimal":false,"detail":2}}'