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 '12928704205273378071356028319036009838561947481257941603104662052087623933827559287072533161846263147993167915638335475816705014105357741603730253421330885656287573321112218977430189914687401639838481102957268598046553940073695403048037210483024893836647090774352342201875361771403888555318429766319908441179773095501061570852675202498764967481610045614260379444647564793912232406104977725247738801721908694714130547' --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":"12928704205273378071356028319036009838561947481257941603104662052087623933827559287072533161846263147993167915638335475816705014105357741603730253421330885656287573321112218977430189914687401639838481102957268598046553940073695403048037210483024893836647090774352342201875361771403888555318429766319908441179773095501061570852675202498764967481610045614260379444647564793912232406104977725247738801721908694714130547"},"decimal":false,"detail":2}}'