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 '200481602239960638913929549217577295345374918448442614575922274181328205165167115445774452729726210358017996183231522470788355777177650772878835176663313503689675549001416272627030500541477271753312938185564134764426689405726918500064752643127094534718184016081554514101945496678204074691330371828215669391037828167336802657637569768713843387483095569829352216483215105774373961278922213910470297746163966649530666600534326622768119952222539534186083067581306100386790370210436600126215978379927226970343123940797338494206482677017344042050411353419558595168543' --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":"200481602239960638913929549217577295345374918448442614575922274181328205165167115445774452729726210358017996183231522470788355777177650772878835176663313503689675549001416272627030500541477271753312938185564134764426689405726918500064752643127094534718184016081554514101945496678204074691330371828215669391037828167336802657637569768713843387483095569829352216483215105774373961278922213910470297746163966649530666600534326622768119952222539534186083067581306100386790370210436600126215978379927226970343123940797338494206482677017344042050411353419558595168543"},"decimal":false,"detail":2}}'