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 '194252019844233292357045467746768675399183478444710967879694873849590963195822557327175672276831950710611904175800371535593448459338410696824796662124254662335710029330067564389822638481711055287270915374567989413276608643715198136791191304552287548092980702867618159571721752033560843671277667312171147056004525030137883455690938371817793078788401628245468030784719519467704380773645096985037586886323804307354931447403112941566288461238950373231641582347104731767819189939154185055271006829488389672958648242098630622067798369436122254841773292292618040944795336349869882985959106087695305147527700429888163968295063291936820985784396878970020875877121176469019219975006961087821623807169765889654493832704781420910339313983308684060400500474461501602207139303536250283144036891678350058578892041772175927121610134077999833380967030166456434235350534069618649489913866315475143685430212721230010008870052645970409907628400741577991001171055360937085625883880300366032486545757667554636552819710633469334561822679052942763934839393534346790535422726889395551261725099522191859887' --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":"194252019844233292357045467746768675399183478444710967879694873849590963195822557327175672276831950710611904175800371535593448459338410696824796662124254662335710029330067564389822638481711055287270915374567989413276608643715198136791191304552287548092980702867618159571721752033560843671277667312171147056004525030137883455690938371817793078788401628245468030784719519467704380773645096985037586886323804307354931447403112941566288461238950373231641582347104731767819189939154185055271006829488389672958648242098630622067798369436122254841773292292618040944795336349869882985959106087695305147527700429888163968295063291936820985784396878970020875877121176469019219975006961087821623807169765889654493832704781420910339313983308684060400500474461501602207139303536250283144036891678350058578892041772175927121610134077999833380967030166456434235350534069618649489913866315475143685430212721230010008870052645970409907628400741577991001171055360937085625883880300366032486545757667554636552819710633469334561822679052942763934839393534346790535422726889395551261725099522191859887"},"decimal":false,"detail":2}}'