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 '185221934101229577069045373617873513233333634827983014870469369623971563097859751003139986044851424510866180161885294649381186120568039053069761140716577123930163311163937662845214159612033012054465891047426810186355784207884243212842786745451629461888354707909150290367615233659655484659622078385205898722474681897403668918375114948788516612778884659545143299876517891670521296963664387' --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":"185221934101229577069045373617873513233333634827983014870469369623971563097859751003139986044851424510866180161885294649381186120568039053069761140716577123930163311163937662845214159612033012054465891047426810186355784207884243212842786745451629461888354707909150290367615233659655484659622078385205898722474681897403668918375114948788516612778884659545143299876517891670521296963664387"},"decimal":false,"detail":2}}'