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 '56812002993887058238527500342984533253546105707232719812043713534044996331077838850879820431210192923154741203735944233936458775932565302527964022356648461550093286165676145488127653583965755537602632647716171668189911500065823192161814793373556767990685183379450719290933003931986169477203484427164732660419782717002043578903875833190640248446934409203024637163953526168545399938852023724470745442672688890074361057832661244044608964421809016362770920466292737663101326551123994656598866371601974786595512992594015708821163008433252244731002707139410050981546036412876660065086731741545101536630293599408700782785509959682123077312336769759450171821305841924398625429553264604810996563573883161512027491408934707903780068728522336769759450171821305841924398625429553264604810996563573883161512027491408934707903780068728522336769759450171821305841924398625429553264604810996563573883161512027491408934707903780068728522336769759450171821305841924398625429553264604810996563573883161512027491408934707903780068728522336769759450171821305841924398625429553264597239' --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":"56812002993887058238527500342984533253546105707232719812043713534044996331077838850879820431210192923154741203735944233936458775932565302527964022356648461550093286165676145488127653583965755537602632647716171668189911500065823192161814793373556767990685183379450719290933003931986169477203484427164732660419782717002043578903875833190640248446934409203024637163953526168545399938852023724470745442672688890074361057832661244044608964421809016362770920466292737663101326551123994656598866371601974786595512992594015708821163008433252244731002707139410050981546036412876660065086731741545101536630293599408700782785509959682123077312336769759450171821305841924398625429553264604810996563573883161512027491408934707903780068728522336769759450171821305841924398625429553264604810996563573883161512027491408934707903780068728522336769759450171821305841924398625429553264604810996563573883161512027491408934707903780068728522336769759450171821305841924398625429553264604810996563573883161512027491408934707903780068728522336769759450171821305841924398625429553264597239"},"decimal":false,"detail":2}}'