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 '765864728249165360581567575472295484548104678238951960587773777111578368079171536476950787150380613201099328393849598606425645843348127724927875580043916083598086067438826818747136619063287113004598812868738020240934186847019682953825530923240874915349577274737563987061227157390071502483909721046043916133236285574569412258106592937787198226648909192471435378429783553676740793220099767450875235154790900902322192717786166876344154343792064700358156278168932404598643326352498146701298121540960800553488253385902590908236243944661328516769222791008468305000550686055683894669754845416173707265903789002572789435186619417965511069350373998993939594802833308233854840200049707665968081458337654958775920915735616051881026799360318974449921054937268781832844757702058194683497' --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":"765864728249165360581567575472295484548104678238951960587773777111578368079171536476950787150380613201099328393849598606425645843348127724927875580043916083598086067438826818747136619063287113004598812868738020240934186847019682953825530923240874915349577274737563987061227157390071502483909721046043916133236285574569412258106592937787198226648909192471435378429783553676740793220099767450875235154790900902322192717786166876344154343792064700358156278168932404598643326352498146701298121540960800553488253385902590908236243944661328516769222791008468305000550686055683894669754845416173707265903789002572789435186619417965511069350373998993939594802833308233854840200049707665968081458337654958775920915735616051881026799360318974449921054937268781832844757702058194683497"},"decimal":false,"detail":2}}'