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 '16545992799164423612445456248772484653360529766157966462655114166152955163967518419964145594975145590129984538223390849024065410488042866773676627403514174059278700968998370487025572737589297059077718742697386506196583125344376189451468315282922120749962109369550592121862231409485342179028610598536693581136232308658513698035272535038595319269836420214683831679414809297608340261' --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":"16545992799164423612445456248772484653360529766157966462655114166152955163967518419964145594975145590129984538223390849024065410488042866773676627403514174059278700968998370487025572737589297059077718742697386506196583125344376189451468315282922120749962109369550592121862231409485342179028610598536693581136232308658513698035272535038595319269836420214683831679414809297608340261"},"decimal":false,"detail":2}}'