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 '128610221634916020810348589450180843918861202225822698902445226584288198027384321196174026249152318265407049598929667553301187585377059535851673783731194752469920381970255883908756547359451644080361318185205186951866398864368758524722697484224392339406291963765675933357537457078359510037343128380319' --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":"128610221634916020810348589450180843918861202225822698902445226584288198027384321196174026249152318265407049598929667553301187585377059535851673783731194752469920381970255883908756547359451644080361318185205186951866398864368758524722697484224392339406291963765675933357537457078359510037343128380319"},"decimal":false,"detail":2}}'