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 '9975549857067364042823991025181729738537725007690595067550681696058117785164618811460492865155137103257858119927043354883043985327048508337248274509776171411149919517023131109020078565529420947531506519643036327856380659061647704534738912495946851832513802527107084138703350853144858013914123094511137693693318393229305951173411024561671598118526953851200162392378911880798497479334972055987895955381145162903635442866769605710888120855165132656388950807191777159357105135825801253572421052388771988665433570000321989738841854753649127454418102391277431254092019932291547995752476251245661483798339133842627150158233406271465173552117530731114652894649543986955010986834630158545308469617545110252387739380072168393364217997359555972837461984872270027528180539943567429254896018910498305681380502151799389089249976706059995042210722135079821403803038316057230964375122416974609860731758100194857717989628547024839635073111799097294538987637027164644319741001162837207717745292316076781172199526991682375969940221687' --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":"9975549857067364042823991025181729738537725007690595067550681696058117785164618811460492865155137103257858119927043354883043985327048508337248274509776171411149919517023131109020078565529420947531506519643036327856380659061647704534738912495946851832513802527107084138703350853144858013914123094511137693693318393229305951173411024561671598118526953851200162392378911880798497479334972055987895955381145162903635442866769605710888120855165132656388950807191777159357105135825801253572421052388771988665433570000321989738841854753649127454418102391277431254092019932291547995752476251245661483798339133842627150158233406271465173552117530731114652894649543986955010986834630158545308469617545110252387739380072168393364217997359555972837461984872270027528180539943567429254896018910498305681380502151799389089249976706059995042210722135079821403803038316057230964375122416974609860731758100194857717989628547024839635073111799097294538987637027164644319741001162837207717745292316076781172199526991682375969940221687"},"decimal":false,"detail":2}}'