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 '6205249508989949249442654972473466835427445367092333736801608506982002541214031657152906060053516218112469889897777696262184184087741083018994370576757632602714303432993347415200352647888293342662926017176164304884056133361585150442171233185353719882638619814242280058487297417054921250792985973578999547760433176113745439223092088914142109863158168701621524725215780920078607616128514506275186225210636013977672760287337868467214051394710862359472096486711798538617163948702136954319970629234775880155596069608363162012357067824325029078753054041837100047507847545194377195170826517' --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":"6205249508989949249442654972473466835427445367092333736801608506982002541214031657152906060053516218112469889897777696262184184087741083018994370576757632602714303432993347415200352647888293342662926017176164304884056133361585150442171233185353719882638619814242280058487297417054921250792985973578999547760433176113745439223092088914142109863158168701621524725215780920078607616128514506275186225210636013977672760287337868467214051394710862359472096486711798538617163948702136954319970629234775880155596069608363162012357067824325029078753054041837100047507847545194377195170826517"},"decimal":false,"detail":2}}'