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 '2577077459679930660171445868393949842497919691934604080156570926512045979511640387267590655605324389402330971818171837828065222288278795572895092687172504573569204805963901355924601861120849487998727959040326214461056497805606125562212799617064264182814536315662676874255980637749195393485671815129680849' --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":"2577077459679930660171445868393949842497919691934604080156570926512045979511640387267590655605324389402330971818171837828065222288278795572895092687172504573569204805963901355924601861120849487998727959040326214461056497805606125562212799617064264182814536315662676874255980637749195393485671815129680849"},"decimal":false,"detail":2}}'