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 '18370430705692954788795602669213332246464261511768302809505802110989056624981285918588873077709789340176335302062642973718903601217178800146928006025084456374137740762528007740265639689562484843641573919606232072491025791448868517768070927891149923257130093830741328297959355425779690162935097663802726627859154851387513227844831332833693510610672719020702205336338619647696892094611994612440809752346504772096479474095658443220081165122200456832394995349356274780146858356641894463163420027004998453939870594003870992335492273976723694629849780399443925133405093788487612565239620366121195156219869438986096237474728021612356492152840401196904702302091903455607607805397304936666078815926639097' --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":"18370430705692954788795602669213332246464261511768302809505802110989056624981285918588873077709789340176335302062642973718903601217178800146928006025084456374137740762528007740265639689562484843641573919606232072491025791448868517768070927891149923257130093830741328297959355425779690162935097663802726627859154851387513227844831332833693510610672719020702205336338619647696892094611994612440809752346504772096479474095658443220081165122200456832394995349356274780146858356641894463163420027004998453939870594003870992335492273976723694629849780399443925133405093788487612565239620366121195156219869438986096237474728021612356492152840401196904702302091903455607607805397304936666078815926639097"},"decimal":false,"detail":2}}'