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 '272716880759665761483588546183899322855498210532387875743725768826710354694078133476871217716258323302759438464835475380224036733626105102292985807088876965862197397929801568360263907330218179328096587378756761390500702674526073449863070287709030119526204954342470207010052853999877714981972915175536166598263032835164400908608094064678047281549346882328669056958272920107508867876390732452805115696522312346099234571037952853393884615657446236071260221332936937556401927413838351111449628093461261760400446747336012892140147296607211242852334169539421754222915563200831426933178313545829258441802668087172042875039198459396670765420431998103693317361427954597016676657684060690623399650942529291076535134752798495560727657130375116721554924721798672360060840713875214357544257568661181032200558640233526415971658215339469864559265822752349867520360523723029818237131577249542256188160317471577838209350720091459994451271400469414253046733167387810096886746194646954975805775920945069277048437163001159244453622842645365166157950716069253037771930120046271650170982157551032788536998902399506453628315426978635537399925782430508166882791506882942895365767843820087177678850576603045022810183401896497607560987774947' --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":"272716880759665761483588546183899322855498210532387875743725768826710354694078133476871217716258323302759438464835475380224036733626105102292985807088876965862197397929801568360263907330218179328096587378756761390500702674526073449863070287709030119526204954342470207010052853999877714981972915175536166598263032835164400908608094064678047281549346882328669056958272920107508867876390732452805115696522312346099234571037952853393884615657446236071260221332936937556401927413838351111449628093461261760400446747336012892140147296607211242852334169539421754222915563200831426933178313545829258441802668087172042875039198459396670765420431998103693317361427954597016676657684060690623399650942529291076535134752798495560727657130375116721554924721798672360060840713875214357544257568661181032200558640233526415971658215339469864559265822752349867520360523723029818237131577249542256188160317471577838209350720091459994451271400469414253046733167387810096886746194646954975805775920945069277048437163001159244453622842645365166157950716069253037771930120046271650170982157551032788536998902399506453628315426978635537399925782430508166882791506882942895365767843820087177678850576603045022810183401896497607560987774947"},"decimal":false,"detail":2}}'