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 '265089855140184252071249327017332635668450952196092255931266691532074774514736230212941133298666313089851334159025579534835224846814047045983270281660878748064639105192706661201540155706171455506359050972783749260834039329191615918738160918477908520140747548419979789739265424129163253181516275256810652677651039369213878619064400290057322043696500925009979919024594284684807386784333973557734168502707404742131698996451954272998951820216837252762733913617329018594518877' --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":"265089855140184252071249327017332635668450952196092255931266691532074774514736230212941133298666313089851334159025579534835224846814047045983270281660878748064639105192706661201540155706171455506359050972783749260834039329191615918738160918477908520140747548419979789739265424129163253181516275256810652677651039369213878619064400290057322043696500925009979919024594284684807386784333973557734168502707404742131698996451954272998951820216837252762733913617329018594518877"},"decimal":false,"detail":2}}'