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 '2783249039300773843803264607913148301539571824519968377290646833786077696887198945220981554591022599564811847811078836135574172630932280624786975956075206728275266088636799689613227788877818010803935402072608847171415730349476615842192677174890878023715095640464719125827114635983265385310010567116469099042806409129675335146140829587649930680435109289757629248913257174723198784139367045016756837047480806715152549594624299385356326231505183828534674808335390256456981556548995799699443395086915539551827389479620515484589740814065204903402980795397862631263344354504452768206749718101589316995941953131350869982219908608450322608642186073987949789762875545512271752273912427470295076673479007242574869' --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":"2783249039300773843803264607913148301539571824519968377290646833786077696887198945220981554591022599564811847811078836135574172630932280624786975956075206728275266088636799689613227788877818010803935402072608847171415730349476615842192677174890878023715095640464719125827114635983265385310010567116469099042806409129675335146140829587649930680435109289757629248913257174723198784139367045016756837047480806715152549594624299385356326231505183828534674808335390256456981556548995799699443395086915539551827389479620515484589740814065204903402980795397862631263344354504452768206749718101589316995941953131350869982219908608450322608642186073987949789762875545512271752273912427470295076673479007242574869"},"decimal":false,"detail":2}}'