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 '2607916887653852555049406797804962959913651346310880758111430171273334871673899265567613730704516848127157460010432680465358460944264962596449771028992454313866565150764662133192977580123309116163917539393071253050140316248507050871888734918673947138058546177619519091625531075714248401206116670074082892318410355077545440904889098300748259461183004104332579399867913093782690239' --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":"2607916887653852555049406797804962959913651346310880758111430171273334871673899265567613730704516848127157460010432680465358460944264962596449771028992454313866565150764662133192977580123309116163917539393071253050140316248507050871888734918673947138058546177619519091625531075714248401206116670074082892318410355077545440904889098300748259461183004104332579399867913093782690239"},"decimal":false,"detail":2}}'