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 '47897314044080443812259861458510321459735170093630071640942094232611844579208372953077333574278604133037288877090004121633546222956761805781373369434981620505570044335898876955575773260424299460528432581837216133753475631540108248320506892318759566023825783310652466774929472533657169369023780458050469950979181710465000561771706470514156199307480848141041844760407071508373639252399614331395769981450703963545980055215266862422605314298354913535358053341501331774395901496425175061403585106153307799256234595467686055717345936897450543967506425462808677084035297673433523886748541691' --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":"47897314044080443812259861458510321459735170093630071640942094232611844579208372953077333574278604133037288877090004121633546222956761805781373369434981620505570044335898876955575773260424299460528432581837216133753475631540108248320506892318759566023825783310652466774929472533657169369023780458050469950979181710465000561771706470514156199307480848141041844760407071508373639252399614331395769981450703963545980055215266862422605314298354913535358053341501331774395901496425175061403585106153307799256234595467686055717345936897450543967506425462808677084035297673433523886748541691"},"decimal":false,"detail":2}}'