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 '1811613811353218586818247755853405876557743309391299832236563978991698783703455828216479075383494055966363558685489810087631876778495581789209668004808655128851076027430657609948671688742630622104898091821742490894887857475704810048612271181530486197576960284147823993158434805218565300200461634562859335720006213557578296883133205460049047754437907324543605114975224100971374247658118377994181897541909830139776541941173363877265372806985641979505124728165894564541816416185785665707387511494894596068687053259670090302578393595736972289485218724206491508949637286468121464455733399908863658802611737987511393001759373507876884073921113722408800753561952689409391341076562283256809433355595988506323433112875338844202662763324109425550278935269815781' --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":"1811613811353218586818247755853405876557743309391299832236563978991698783703455828216479075383494055966363558685489810087631876778495581789209668004808655128851076027430657609948671688742630622104898091821742490894887857475704810048612271181530486197576960284147823993158434805218565300200461634562859335720006213557578296883133205460049047754437907324543605114975224100971374247658118377994181897541909830139776541941173363877265372806985641979505124728165894564541816416185785665707387511494894596068687053259670090302578393595736972289485218724206491508949637286468121464455733399908863658802611737987511393001759373507876884073921113722408800753561952689409391341076562283256809433355595988506323433112875338844202662763324109425550278935269815781"},"decimal":false,"detail":2}}'